Our complete selection of laser diodes is available on the LD Selection Guide tab above.
Webpage Features
Clicking this icon opens a window that contains specifications and mechanical drawings.
Clicking this icon allows you to download our standard support documentation.
Choose Item
Clicking the words "Choose Item" opens a drop-down list containing all of the in-stock lasers around the desired center wavelength. The red icon next to the serial number then allows you to download L-I-V and spectral measurements for that serial-numbered device.
TO-packaged laser diodes are available in standard Ø3.8 mm, Ø5.6 mm, or Ø9 mm TO cans, as well as TO-46 or Ø9.5 mm cans. We have categorized the pin configurations into standard A, B, C, D, E, F, G, and H pin codes (see the diagram below). This pin code allows the user to easily determine compatible mounts.
Some of our diodes that are offered in header packages can be converted to a sealed TO can package by request, as indicated in the tables below. Please contact Tech Support for details.
Notes on Center Wavelength While the center wavelength is listed for each diode, this is only a typical number. The center wavelength of a particular diode varies from production run to production run. Thus, the diode you receive may not operate at the typical center wavelength. Diodes can be temperature tuned, which will alter the lasing wavelength. A number of items below are listed as Wavelength Tested, which means that the dominant wavelength of each unit has been measured and recorded. For many of these items, after clicking "Choose Item" below, a list will appear that contains the dominant wavelength, output power, and operating current of each in-stock unit. Clicking on the red Docs Icon next to the serial number provides access to a PDF with serial-number-specific L-I-V and spectral characteristics. For products listed as Wavelength Tested that do not have the "Choose Item" option, please contact Tech Support with inquires about specific wavelengths.
Spatial Mode and Linewidth We offer laser diodes with different output characteristics (power, wavelength, beam size, shape, etc.). Most lasers offered here are single spatial mode (single mode, or SM) and a few are designed for higher-power, multi-spatial-mode (multimode, or MM) operation. Our wavelength stabilized VHG laser diodes, sold below, have excellent single mode performance. Some single mode laser diodes can be operated with limited single-longitudinal-mode characteristics (see tables below for additional information). For better side mode suppression ratio (SMSR) performance, consider devices such as DFB lasers, VHG-stabilized lasers, DBR lasers, or external cavity lasers. Thorlabs single-frequency lasers are highlighted in green in the tables below; in particular, our VHG-stabilized, DFB, DBR, and external cavity lasers have very narrow linewidths (≤20 MHz for the VHG-stabilized and DFB lasers and <100 kHz for the DBR and ECL lasers). Please see our Laser Diode Tutorial for more information on these topics and laser diodes in general.
Laser diodes are sensitive to electrostatic shock. Please take the proper precautions when handling the device (see our electrostatic shock accessories). Laser diodes are also sensitive to optical feedback, which can cause significant fluctuations in the output power of the laser diode depending on the application. See our optical isolators for potential solutions to this problem. Tech Support staff are available to help you select a laser diode and to discuss possible operation issues.
Pin Codes
Laser Diode pin codes indicate which mounts and diodes are compatible. The drawings do not represent exact wiring diagrams.
Pin Code
Monitor Photodiode
Pin Code
Monitor Photodiode
A
Yes
E
No
B
Yes
F
Yes
C
Yes
G
No
D
Yes
H
No
For warranty information for laser diodes, please refer to the LD Operation tab.
Choosing a Collimation Lens for Your Laser Diode
Since the output of a laser diode is highly divergent, collimating optics are necessary. Aspheric lenses do not introduce spherical aberration and are therefore are commonly chosen when the collimated laser beam is to be between one and five millimeters. A simple example will illustrate the key specifications to consider when choosing the correct lens for a given application.
Example
Laser Diode to be Used: L780P010
Desired Collimated Beam Diameter: Ø3 mm (Major Axis)
When choosing a collimation lens, it is essential to know the divergence angle of the source being used and the desired output diameter. The specifications for the L780P010 laser diode indicate that the typical parallel and perpendicular FWHM beam divergences are 10° and 30°, respectively. Therefore, as the light diverges, an elliptical beam will result. To collect as much light as possible during the collimation process, consider the larger of these two divergence angles in any calculations (i.e., in this case, use 30°). If you wish to convert your elliptical beam into a round one, we suggest using an Anamorphic Prism Pair, which magnifies one axis of your beam.
Ø = Beam Diameter
Θ = Divergence Angle
Assuming that the width of the lens is negligible compared to the radius of curvature, the thin lens approximation can be used to determine the appropriate focal length for the asphere. Assuming a divergence angle of 30° (FWHM) and desired beam diameter of 3 mm:
f = Focal Length
Note that the focal length is generally not equal to the needed distance between the light source and the lens.
With this information known, it is now time to choose the appropriate collimating lens. Thorlabs offers a large selection of aspheric lenses. For this application, the ideal lens is a molded glass aspheric lens with focal length near 5.6 mm and our -B antireflection coating, which covers 780 nm. The C171TMD-B (mounted) or 354171-B (unmounted) aspheric lenses have a focal length of 6.20 mm, which will result in a collimated beam diameter (major axis) of 3.3 mm. Next, check to see if the numerical aperture (NA) of the diode is smaller than the NA of the lens:
0.30 = NALens > NADiode ≈ sin(15°) = 0.26
Up to this point, we have been using the full-width at half maximum (FWHM) beam diameter to characterize the beam. However, a better practice is to use the 1/e2 beam diameter. For a Gaussian beam profile, the 1/e2 diameter is almost equal to 1.7X the FWHM diameter. The 1/e2 beam diameter therefore captures more of the laser diode's output light (for greater power delivery) and minimizes far-field diffraction (by clipping less of the incident light).
A good rule of thumb is to pick a lens with an NA twice that of the laser diode NA. For example, either the A390-B or the A390TM-B could be used as these lenses each have an NA of 0.53, which is more than twice the approximate NA of our laser diode (0.26). These lenses each have a focal length of 4.6 mm, resulting in an approximate major beam diameter of 2.5 mm. In general, using a collimating lens with a short focal length will result in a small collimated beam diameter and a large beam divergence, while a lens with a large focal length will result in a large collimated beam diameter and a small divergence.
Laser Diode and Laser Diode Pigtail Warranty
When operated within their specifications, laser diodes have extremely long lifetimes. Most failures occur from mishandling or operating the lasers beyond their maximum ratings. Laser Diodes are among the most static-sensitive devices currently made. Proper ESD Protection should be worn whenever handling a laser diode. Due to their extreme electrostatic sensitivity, laser diodes cannot be returned after their sealed package has been open. Laser diodes in their original sealed package can be returned for a full refund or credit.
Handling and Storage Precautions
Due to their extreme susceptibility to damage from electrostatic discharge (ESD), care should be taken whenever handling and operating laser diodes:
Laser Diode Storage: When not in use, short the leads of the laser together to protect against ESD damage.
Operating and Safety Precautions
Use an Appropriate Driver: Laser diodes require precise control of operating current and voltage to avoid overdriving the laser diode. In addition, the laser driver should provide protection against power supply transients. Select a laser driver appropriate for your application. Do not use a voltage supply with a current limiting resistor since it does not provide sufficient regulation to protect the laser.
Power Meters: When setting up and calibrating a laser diode with its driver, use a NIST-traceable power meter to precisely measure the laser output. It is usually safest to measure the laser output directly before placing the laser in an optical system. If this is not possible, be sure to take all optical losses (transmissive, aperture stopping, etc.) into consideration when determining the total output of the laser.
Reflections: Flat surfaces in the optical system in front of a laser diode can cause some of the laser energy to reflect back onto the laser’s monitor photodiode giving an erroneously high photodiode current. If optical components are moved within the system and energy is no longer reflected onto the monitor photodiode, a constant power feedback loop will sense the drop in photodiode current and try to compensate by increasing the laser drive current and possibly overdriving the laser. Back reflections can also cause other malfunctions or damage to laser diodes. To avoid this, be sure that all surfaces are angled 5-10°, and when necessary, use optical isolators to attenuate direct feedback into the laser.
Heat Sinks: Laser diode lifetime is inversely proportional to operating temperature. Always mount the laser in a suitable heat sink to remove excess heat from the laser package.
Voltage and Current Overdrive: Be careful not to exceed the maximum voltage and drive current listed on the specification sheet with each laser diode, even momentarily. Also, reverse voltages as little as 3 V can damage a laser diode.
ESD Sensitive Device: Currently operating lasers are susceptible to ESD damage. This is particularly aggravated by using long interface cables between the laser diode and its driver due to the inductance that the cable presents. Avoid exposing the laser or its mounting apparatus to ESDs at all times.
ON/OFF and Power Supply Coupled Transients: Due to their fast response times, laser diodes can be easily damaged by transients less than 1 µs. High current devices such as soldering irons, vacuum pumps, and fluorescent lamps can cause large momentary transients. Thus, always use surge-protected outlets.
If you have any questions regarding laser diodes, please call your local Thorlabs Technical Support office for assistance.
Laser Safety and Classification
Safe practices and proper usage of safety equipment should be taken into consideration when operating lasers. The eye is susceptible to injury, even from very low levels of laser light. Thorlabs offers a range of laser safety accessories that can be used to reduce the risk of accidents or injuries. Laser emission in the visible and near infrared spectral ranges has the greatest potential for retinal injury, as the cornea and lens are transparent to those wavelengths, and the lens can focus the laser energy onto the retina.
Safe Practices and Light Safety Accessories
Thorlabs recommends the use of safety eyewear whenever working with laser beams with non-negligible powers (i.e., > Class 1) since metallic tools such as screwdrivers can accidentally redirect a beam.
Laser goggles designed for specific wavelengths should be clearly available near laser setups to protect the wearer from unintentional laser reflections.
Goggles are marked with the wavelength range over which protection is afforded and the minimum optical density within that range.
Blackout Materials can prevent direct or reflected light from leaving the experimental setup area.
Thorlabs' Enclosure Systems can be used to contain optical setups to isolate or minimize laser hazards.
A fiber-pigtailed laser should always be turned off before connecting it to or disconnecting it from another fiber, especially when the laser is at power levels above 10 mW.
All beams should be terminated at the edge of the table, and laboratory doors should be closed whenever a laser is in use.
Do not place laser beams at eye level.
Carry out experiments on an optical table such that all laser beams travel horizontally.
Remove unnecessary reflective items such as reflective jewelry (e.g., rings, watches, etc.) while working near the beam path.
Be aware that lenses and other optical devices may reflect a portion of the incident beam from the front or rear surface.
Operate a laser at the minimum power necessary for any operation.
If possible, reduce the output power of a laser during alignment procedures.
Post appropriate warning signs or labels near laser setups or rooms.
Use a laser sign with a lightbox if operating Class 3R or 4 lasers (i.e., lasers requiring the use of a safety interlock).
Do not use Laser Viewing Cards in place of a proper Beam Trap.
Laser Classification
Lasers are categorized into different classes according to their ability to cause eye and other damage. The International Electrotechnical Commission (IEC) is a global organization that prepares and publishes international standards for all electrical, electronic, and related technologies. The IEC document 60825-1 outlines the safety of laser products. A description of each class of laser is given below:
Class
Description
Warning Label
1
This class of laser is safe under all conditions of normal use, including use with optical instruments for intrabeam viewing. Lasers in this class do not emit radiation at levels that may cause injury during normal operation, and therefore the maximum permissible exposure (MPE) cannot be exceeded. Class 1 lasers can also include enclosed, high-power lasers where exposure to the radiation is not possible without opening or shutting down the laser.
1M
Class 1M lasers are safe except when used in conjunction with optical components such as telescopes and microscopes. Lasers belonging to this class emit large-diameter or divergent beams, and the MPE cannot normally be exceeded unless focusing or imaging optics are used to narrow the beam. However, if the beam is refocused, the hazard may be increased and the class may be changed accordingly.
2
Class 2 lasers, which are limited to 1 mW of visible continuous-wave radiation, are safe because the blink reflex will limit the exposure in the eye to 0.25 seconds. This category only applies to visible radiation (400 - 700 nm).
2M
Because of the blink reflex, this class of laser is classified as safe as long as the beam is not viewed through optical instruments. This laser class also applies to larger-diameter or diverging laser beams.
3R
Lasers in this class are considered safe as long as they are handled with restricted beam viewing. The MPE can be exceeded with this class of laser, however, this presents a low risk level to injury. Visible, continuous-wave lasers are limited to 5 mW of output power in this class.
3B
Class 3B lasers are hazardous to the eye if exposed directly. However, diffuse reflections are not harmful. Safe handling of devices in this class includes wearing protective eyewear where direct viewing of the laser beam may occur. In addition, laser safety signs lightboxes should be used with lasers that require a safety interlock so that the laser cannot be used without the safety light turning on. Class-3B lasers must be equipped with a key switch and a safety interlock.
4
This class of laser may cause damage to the skin, and also to the eye, even from the viewing of diffuse reflections. These hazards may also apply to indirect or non-specular reflections of the beam, even from apparently matte surfaces. Great care must be taken when handling these lasers. They also represent a fire risk, because they may ignite combustible material. Class 4 lasers must be equipped with a key switch and a safety interlock.
All class 2 lasers (and higher) must display, in addition to the corresponding sign above, this triangular warning sign
Posted Comments:
I-Yun Chen
 (posted 2021-03-11 13:04:29.437)
Hello. We used L520P50, but we want to automatically drive its operating current back and forth to achieve different power. Is this possible for L520P50? Or do you have any recommendation?
YLohia
 (posted 2021-03-12 03:39:10.0)
Hello, are you asking if it is possible to operate the L520P50 in a constant power mode at various set power levels? If so, the answer is yes, but will ultimately depend on the specs of your current driver. For example, our LDC205C driver can support such a mode. Please see page 15 of the manual: https://www.thorlabs.com/_sd.cfm?fileName=15988-D02.pdf&partNumber=LDC205C
I-Yun Chen
 (posted 2021-01-19 03:53:22.743)
Hello. We used DL5146-101S as a light source in our experiment. However, we have observed that after operating for 3 hours, the power of the laser seems to be drifting(the power becomes larger and larger). I wonder if there is any solution to this problem. Thanks a lot.
YLohia
 (posted 2021-01-19 03:23:50.0)
Hello, how much is the power drifting over time? Usually, such effects can be attributed to the lack of active cooling and/or improper heat-sinking. I have reached out to you directly to troubleshoot further.
L785 SH300 - what is the recommended operating temperature? In the spec sheet it is "20 - 50°C" but there is one small additional note that says T_CHIP=25°C. What is T_CHIP? Thank you, Josefine
YLohia
 (posted 2020-10-22 01:46:55.0)
Hello Josefine, thank you for contacting Thorlabs. T_Chip is the temperature of the laser diode chip (not case). All specs are taken at a chip temperature of 25 C. This can be considered the "recommended" operating temperature for most applications. Some applications may require slight differences in the output spectrum, which can be tuned by changing the temperature of the chip. For example, the temperature tuning coefficient of the LD785-SH300 is on the order of 0.20-0.25 nm/C.
michael lee
 (posted 2020-09-10 13:12:20.473)
L405P150 - 405 nm, 150 mW is a laser we want to try in our CBRNE instrument, but we need a different form factor. We are looking for 5.6mm - B package. Is this something you can do for us, without costing too much?
YLohia
 (posted 2020-09-11 09:05:33.0)
Thank you for contacting Thorlabs. We offer the DL5146-101S 405 nm laser diode in a 5.6 mm package. I have reached out to you directly to discuss the possibility of getting a custom laser.
Mark Frederick
 (posted 2020-09-08 20:42:37.227)
What is the window thickness of the L638P200?
YLohia
 (posted 2020-09-09 11:18:57.0)
Thank you for contacting Thorlabs. The window thickness for the L638P200 is ~0.25 mm.
Actually, I really wanted to know it's side-effects! Specifically, is it harmful for human? What's the time one can stay expose to certain laser! Is it harmful, do answer my queries!
Eagerly waiting for your reply😊
YLohia
 (posted 2020-07-30 03:37:05.0)
Hello, thank you for contacting Thorlabs. We suggest contacting your local Laser Safety Officer (LSO) for accurate information regarding laser safety and human health.
David Lowndes
 (posted 2020-06-11 07:30:49.667)
Could you please advise the materials of the TO56 packages?
YLohia
 (posted 2020-06-16 08:22:05.0)
Thank you for contacting Thorlabs. We have reached out to you directly to discuss this.
Have you got anything like (package, wavelength, power) an L637P5 but with pin code "G"? In our application we cannot tolerate the connection of the circuit to the case of the diode.
YLohia
 (posted 2020-01-08 02:07:22.0)
Thank you for contacting Thorlabs. We offer the HL63133DG, which has a 170 mW typical output power, G pin code, and 5.6 mm package.
Juwan Kim
 (posted 2020-01-07 00:24:10.747)
Do you have any products with specially enhanced temperature characteristics?
I'm looking for a product that meets the specifications below.
1. Visible LD: 50 mw or higher, CW, temperature -40 to 50
2. Infrared LD: 200 mW or higher, CW, temperature -40 to 50
YLohia
 (posted 2020-01-07 11:37:55.0)
Thank you for contacting Thorlabs. I have reached out to you directly to discuss possible solutions.
L462P1400MM has been discontinued, what is the replacement product?
YLohia
 (posted 2019-11-18 11:12:58.0)
Thank you for contacting Thorlabs. The closest alternative to this item is the L450P1600MM.
Steve Russell
 (posted 2019-11-15 14:08:06.383)
Can you tell me what the electrical frequency response of this particular laser diode is? I never see this spec in any laser spec sheet of any type.
YLohia
 (posted 2019-11-20 11:19:56.0)
Hello, thank you for contacting Thorlabs. Unfortunately, we do not measure this parameter and it is hard to guarantee a certain level of performance as it varies between different pieces. Each diode would have to be individually tested in order to provide an accurate representation of the frequency response. That being said, we expect that the L850P010 can be modulated >100 MHz with the proper drive electronics.
Ana R
 (posted 2019-10-18 17:51:38.667)
Hi,
I have an L785H1 diode that I'm setting up as part of an ECDL. The specifications state that the threshold current should be around 50 mA, but I'm getting just above 25 mA free-running. Is this something to be concerned about?
YLohia
 (posted 2019-10-18 02:49:38.0)
Hello, thank you for contacting Thorlabs. A lower threshold current is not a cause for concern. We specify the typical threshold current to be 50 mA, but we do not specify a lower bound as this can vary and is not seen as a defect.
user
 (posted 2019-10-17 09:26:55.633)
Hello, do you provide tolerance data regarding the positioning (x y z & tilt) of these TO-46, TO-56, TO-90 packages ? What should be the most reliable reference surface ? (package cylinder diameter, cylinder front face, support back or front plane ?)
YLohia
 (posted 2019-10-17 11:16:56.0)
Hello, we do not provide this tolerance data as some of the laser diodes on this page are sourced from other manufacturers (these diodes have original manufacturer spec sheets on this page) and these tolerances are not consistent. I will reach out to you directly to discuss your requirements further.
user
 (posted 2019-07-23 04:04:08.233)
What is the lifetime characteristics of laser diode L520G1, particularly MTBF?
YLohia
 (posted 2019-08-07 10:00:19.0)
Hello, thank you for contacting Thorlabs. I have reached out to you directly with this information.
user
 (posted 2019-06-24 03:51:37.793)
Is it possible to order a HL6312G diode with a lasing wavelength known more accurately than the 625 - 640 nm range given by the data sheet ?
YLohia
 (posted 2019-06-24 09:39:17.0)
Hello, thank you for contacting Thorlabs. Unfortunately, these laser diodes are not tested individually for wavelength. You can, however, purchase one of the LPS-635-FC pigtailed diodes, which are individually tested for wavelength and power.
Hello,
I bought L520P50 from Thorlabs. May I know the company which manufactures this diode? I am looking for a diode with TO56 package with a wavelength from 521-575 nm.
Best Regards,
Phani.
Vladimir Makarov
 (posted 2019-05-30 15:28:02.717)
Hello, I am using the PL450B laser diode as a point illumination source. Could you tell me what the length and width of the emission area is? In other words, the size of the area on the facet of the laser where the light is emitted.
YLohia
 (posted 2019-05-30 04:37:22.0)
Hello, the emitter width for this laser diode is 1.5um x 1.0 um.
user
 (posted 2019-04-30 09:57:39.64)
Could you please suggest me a collimation tube for 3.8mm laser diodes like L405P150, PL520 or L638P150 and other 3.8mm Laser diodes?
thanks in advance.
ibrahim
YLohia
 (posted 2019-04-30 09:29:13.0)
Hello Ibrahim, thank you for contacting Thorlabs. Unfortunately, we currently do not offer collimation tubes for 3.8mm package size laser diodes. That being said, you can build your own collimation tube with the
S05LM38 adapter for 3.8mm diodes and using appropriate SM05 lens tubes and aspheric lenses.
About the HL6750, when I look at the manufacturers spec sheet in the link, it appears to be pin code A. But it is listed as pin code C. Could you please check the listing?
mmcclure
 (posted 2018-11-19 10:09:53.0)
Hello, thank you for your inquiry. The pin configuration for the HL6750MG laser diode corresponds to pin code C, as shown in both the manufacturer's spec sheet and the blue "info" icon on the website. Should you have additional questions, our tech support team will happily assist you.
paul.nachman
 (posted 2018-07-11 12:09:32.84)
The drawings you provide in this image ...
https://www.thorlabs.com/images/popupimages/HL8338MG_DWG.gif
... don't label the pin numbers in the pin diagram for comparison with the bottom view.
It's lucky that you make the manufacturer's data available ...
https://www.thorlabs.com/drawings/fd0e8f0902043f28-6AFA1F67-E78D-AFDC-C6C2BB53EE55033C/HL8338MG-MFGSpec.pdf
... else I would have guessed wrong.
YLohia
 (posted 2018-07-12 09:57:42.0)
Hello, thank you for your feedback and bringing this issue to our attention. We are currently working on making all drawings for this item more consistent with each other.
chih.hao.li
 (posted 2018-05-23 08:53:36.27)
Hi We are wondering if there is AR coating on the laser diode front window. If no, how much do you charge for an AR coated laser diode? Thank you!
YLohia
 (posted 2018-05-23 05:07:46.0)
Hello, thank you for contacting Thorlabs. The windows on laser diode cans are almost always AR coated.
user
 (posted 2018-03-12 15:35:01.523)
The PL450B pin connections reported in the Thorlabs selling packages and datasheets are different from the one reported in pag. 7 of the PL450B MFG Spec.
YLohia
 (posted 2018-03-22 08:25:57.0)
Hello, thank you for your feedback. We took a look at this and, while they are labeled differently, the pin connections are still the same. The only thing that is different here is that the arbitrary pin numbers (Pin 1 and Pin 3) are switched in designation.
robert
 (posted 2017-10-11 16:29:34.97)
It should be made clear to prospective buyers that these diodes are exceptionally sensitive to optically feedback. To quote the Thorlabs Tech Support staff "Our engineers that designed this told me that any reflection with more than 2% of the power will kill diode." That is not typical of laser diodes in this wavelength range.
tcampbell
 (posted 2018-03-23 02:17:13.0)
Hello, thank you for contacting Thorlabs. After discussing with our engineers, we have added a warning for select laser diodes on this page. Please feel free to contact us if you have concerns about any other products on our site.
Do you can give me the spectrum of the diode laser DL5146-101S?
THANKS
tfrisch
 (posted 2017-06-30 01:11:14.0)
Hello, thank you for contacting Thorlabs. The spectrum will change because of differences from one production lot to another and because of differences in use, such as operating temperature and drive current. I will reach out to you directly to discuss your application.
dmitry.busko
 (posted 2016-11-16 11:59:52.17)
In a datasheet for M9-940-0200 there is no any information about the LD and PD pin connections.
tfrisch
 (posted 2016-11-22 08:21:01.0)
Hello, thank you for pointing out the missing circuit information. We will correct the spec sheet, but until then, if you are looking at the bottom of laser diode (pins pointing towards you), and the square cutout is down, the left pin is the Photodiode Anode, the center pin ties the Photodiode Cathode to the Laser Diode Anode and the case, and the right pin is the Laser Diode Cathode.
mitch
 (posted 2016-06-18 08:50:58.713)
Hi, I would like to drive the L850P010 fast. Initially I will be using your bias-T and driver, but I plan on designing my own bias-T for 2.4GHz operation. I was wondering if you could provide details on this laser diodes approximate impedance and more importantly it's capacitance? Thanks
besembeson
 (posted 2016-06-22 08:50:15.0)
Response from Bweh at Thorlabs USA: Such high speed modulation will not be suitable with this diode. You may want to consider a VCSEL instead and we don't have one for your application at this time.
pedrueze
 (posted 2016-02-02 13:23:02.757)
Hi all,
I have your profile current and temperature controller "Profile PRO 8000" with a combined module LD/TE controller ITC 8052.
(I can send by email the pics of them.)
I also have a laser diode L9805E2P5, (50 mW, 980 nm, A Pin code).
The problem is that I need to choose an appropiate Temperature Controlled Laser Diode Mount for it.
I was checking the TCLDM9 device. The problem is that the output of the controller is DB-15 (15 pins), and very close to it is the LD output of 9 pins.
It is better understood if you can see the pics.
I need to be sure which are the appropiate cables to connect between my controller and the TE mount, regarding the pin congiguration of my LD,
and if they have enough space to put in the module.
Could you please help me with that?
Thank you very much.
besembeson
 (posted 2016-02-04 10:21:59.0)
Response from Bweh at Thorlabs USA: The cables you would need will be the CAB400 for the laser control and CAB420-15 for the temperature controller. These can be found at the following page: http://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=966&pn=ITC8052
cmrogers
 (posted 2015-12-07 21:36:29.773)
I am looking for is a diode centered near 656nm, with as a wide a gain bandwidth as possible, for use in an ECDL. What is the gain bandwidth of the relevant diodes that you sell?
Also, are any of your diodes AR coated?
Thanks!
besembeson
 (posted 2015-12-08 10:14:54.0)
Response from Bweh at Thorlabs USA: The Fabry Perot lasers that you would need for your wavelength of interest will typically have optical bandwidth in the 5-10nm range. The high power diode lasers, for example the HL6545MG are AR coated.
pedrueze
 (posted 2015-10-12 11:42:15.523)
Hello. I just recently bought one L9805E2P5 laser diode + a cable SR9A-DB9.
We have a current controller whose pin diagram could be find here:
http://assets.newport.com/webDocuments-EN/images/70041001_LDC-37x4C_IX.PDF
(see please page 17)
As you may see, doesn't match with the pins of the cable, so we must re-wired it.
My concern is which pins should I re-wire. In principle, I wired 3, 5 and 9 to use the laser diode, cathode, anode and ground chassis.
Is this correct/enough to make the laser emitting? should I connect the PD cathode and Anode as well? What is the use of anode/cathode voltage sense pins in the manual?
Concerning the temperature, I will use the laser at low-power (for alignement).
Thanks a lot for your help.
jlow
 (posted 2015-10-12 04:55:23.0)
Response from Jeremy at Thorlabs: At a minimum, you will want to connect Pin2 and Pin7 on the SR9A-DB9 to your controller. If you want to use the internal photodiode for feedback, you will want to connect Pin4 as well. I will contact you directly via e-mail to help with this.
hmagh001
 (posted 2015-05-08 10:53:27.903)
We just bought L808P200 for our lab and it is supposed to have a maximum power of 200 mW, and the spec. file of Laser diodes says that the threshold current is 100 mA. However, when I set the current to 80 mW from the LD controller (bought from thorlab as well, LDC220C) and measure the power with an optical power meter, it shows only 5 mW. I was wondering, how can we reach to higher power numbers with this laser diode.
Thanks,
Hadi.
jlow
 (posted 2015-05-13 11:05:19.0)
Response from Jeremy at Thorlabs: The threshold current is the current needed for the LD to lase. To get to the 200mW power, you would need to drive this near the operating current (somewhere between 220 to 300mA for the L808P200). Please use an optical power meter to measure the output power instead of relying just on the supplied current. Also, the light from the LD is divergent so please make sure your optical power meter will capture all the light from the LD to get an accurate reading.
rssi_2nava
 (posted 2014-11-24 19:25:25.74)
Hello guys,
i was hoping you can tell me the amplitude reflection coefficients of the diode rear and front faces of the L1060P100J laser diode, i can't find them anywhere and i need them to compute the transmision function of the diode cavity. I'll appreciate reading from you soon
Kind Regards
jlow
 (posted 2014-12-11 01:30:49.0)
Response from Jeremy at Thorlabs: The coating information on the chip facet is proprietary and is not something that we can provide.
jimzambuto
 (posted 2014-10-03 11:13:51.5)
For the diode part number L404P400M, what is the extent of the SLOW AAXIS. I am trying to design a collimator and the residual divergence caused by the extent of the laser facet in the slow or multimode direction is very important.
jlow
 (posted 2014-10-13 09:05:41.0)
Response from Jeremy at Thorlabs: You can find the far-field emission pattern/angle on page 3 of the MFG spec sheet in the supporting documents. The direct link is http://www.thorlabs.com/thorcat/QTN/L404P400M-MFGSpec.pdf.
ar_1348
 (posted 2014-04-26 15:03:07.077)
i need a driver for M5-905-0100
cdaly
 (posted 2014-05-08 02:58:52.0)
Response from Chris at Thorlabs: This laser can be mounted in TCLDM9 and driven with LDC202C which can provide 200mA, covering the M5-905-0100's max operating current of 170mA. I'd suggest using a temperature controller as well, such as TED200C.
t.meinert
 (posted 2014-01-08 08:36:55.39)
ask for Quotation:
LD Type: DL 5146-101s
Quantity: 100pcs/a
1000pcs/a
jlow
 (posted 2014-01-08 10:15:34.0)
Response from Jeremy at Thorlabs: We will contact you directly to provide a quote.
The rows shaded green below denote single-frequency lasers.
Please see the the blue info icons () above for absolute maximum power and current specifications. Do not exceed these values, whichever occurs first.
Laser diodes with a built-in monitor photodiode can operate at constant power.
A socket is included to assist with soldering. The leads on this diode have a larger 0.6 mm diameter than the typical 0.45 mm diameter for a Ø9 mm package. This makes it incompatible with mounts and sockets that are designed to fit a standard Ø9 mm TO can package, such as our LDM90 mount.
This laser diode has a built in Zener diode to help protect against damage from small levels of electrostatic discharge and reverse potential on the laser diode.
This laser diode has a built in Zener diode to help protect against damage from small levels of electrostatic discharge and reverse potential on the laser diode. A temperature-controlled mount such as our LDM56F(/M) or LDM90(/M) is recommended for general use.
532 nm TO Can DPSS Lasers
Item #
Info
Wavelength
Powera
Typical/Max Drive Currenta
Package
Pin Code
Monitor Photodiode
Compatible Socket
Wavelength Tested
Spatial Mode
DJ532-10b
532 nm
10 mW
220 mA / 250 mA
Ø9.5 mm (Non-Standard)c
A
Yesd
-
No
Single Mode
DJ532-40b
532 nm
40 mW
330 mA / 400 mA
Ø9.5 mm (Non-Standard)c
E
No
-
No
Single Mode
Please see the the blue info icons () above for absolute maximum power and current specifications. Do not exceed these values, whichever occurs first.
Click here for more information on our 532 nm Diode Pumped Solid State Lasers.
These lasers have the same pin spacing as our Ø5.6 mm laser diodes. They are compatible with the LDM56 Laser Diode Mount using the LDM56DJ DPSS Laser Mounting Flange.
The monitor photodiode of the DJ532-10 measures the power of the pump source, not the 532 nm output. Therefore, we recommend operating these diodes in constant current mode.
Please see the the blue info icons () above for absolute maximum power and current specifications. Do not exceed these values, whichever occurs first.
Laser diodes with a built-in monitor photodiode can operate at constant power.
A socket is included to assist with soldering. The leads on this diode have a larger 0.6 mm diameter than the typical 0.45 mm diameter for a Ø9 mm package. This makes it incompatible with mounts and sockets that are designed to fit a standard Ø9 mm TO can package, such as our LDM90 mount.
Please see the the blue info icons () above for absolute maximum power and current specifications. Do not exceed these values, whichever occurs first.
Laser diodes with a built-in monitor photodiode can operate at constant power.
In order to achieve the specified performance, we recommend using the LDM90 Laser Diode Mount and, when collimated, an NIR Optical Isolator; single frequency performance when collimated is only guaranteed with >35 dB isolation of back reflections. This volume holographic grating (VHG) laser diode is also available in an SM pigtail package with internal isolator.
The power can be tuned across the operating current range, given in the serial-number-specific documentation, while maintaining wavelength-stabilized, single-frequency performance within a stabilized temperature range.
The Ø9 mm package for the LD785-SEV300 is 4.30 mm (0.17") thick, which is more than the standard Ø9 mm package thickness of 1.50 mm (0.06"). The diode will still be compatible with all Ø9 mm laser diode mounts; please see the Drawing tab in the blue info icon () above for full package specifications. Mounting this diode in the LDM90(/M) requires two 2-56 screws, included with this diode.
Single-Frequency Laser (Single Longitudinal Mode)
This diode is exceptionally sensitive to optical feedback. Any reflection with more than 2% of the incident power has the potential to permanently damage the diode.
805 nm - 808 nm TO Can Laser Diodes
Note: The rows shaded green below denote single-frequency laser diodes.
Please see the the blue info icons () above for absolute maximum power and current specifications. Do not exceed these values, whichever occurs first.
Laser diodes with a built-in monitor photodiode can operate at constant power.
In order to achieve the specified performance, we recommend using the LDM90 Laser Diode Mount and, when collimated, an NIR Optical Isolator; single frequency performance when collimated is only guaranteed with >35 dB isolation of back reflections.
Single-Frequency Laser (Single Longitudinal Mode)
The power can be tuned across the operating current range, given in the serial-number-specific documentation, while maintaining wavelength-stabilized, single-frequency performance within a stabilized temperature range.
The Ø9 mm package for this diode is 4.30 mm (0.17") thick, which is more than the standard Ø9 mm package thickness of 1.50 mm (0.06"). The diode will still be compatible with all Ø9 mm laser diode mounts; please see the Drawing tab in the blue info icon () above for full package specifications. Mounting this diode in the LDM90(/M) requires two 2-56 screws, included with this diode.
This diode is exceptionally sensitive to optical feedback. Any reflection with more than 2% of the incident power has the potential to permanently damage the diode.
820 nm - 895 nm TO Can Laser Diodes
Note: The rows shaded green below denote single-frequency laser diodes.
Please see the the blue info icons () above for absolute maximum power and current specifications. Do not exceed these values, whichever occurs first.
Laser diodes with a built-in monitor photodiode can operate at constant power.
This diode is exceptionally sensitive to optical feedback. Any reflection with more than 2% of the incident power has the potential to permanently damage the diode.
The Ø9 mm package for this diode is 4.30 mm (0.17") thick, which is more than the standard Ø9 mm package thickness of 1.50 mm (0.06"). The diode will still be compatible with all Ø9 mm laser diode mounts; please see the Drawing tab in the blue info icon () above for full package specifications. Mounting this diode in the LDM90(/M) requires two 2-56 screws, included with this diode.
Single-Frequency Laser (Single Longitudinal Mode)
In order to achieve the specified performance, we recommend using the LDM90 Laser Diode Mount and, when collimated, an NIR Optical Isolator; single frequency performance when collimated is only guaranteed with >35 dB isolation of back reflections.
The power can be tuned across the operating current range, given in the serial-number-specific documentation, while maintaining wavelength-stabilized, single-frequency performance within a stabilized temperature range.
Please see the the blue info icons () above for absolute maximum power and current specifications. Do not exceed these values, whichever occurs first.
Laser diodes with a built-in monitor photodiode can operate at constant power.
Single-Frequency Laser (Single Longitudinal Mode)
This diode is available from stock in an open header package. It can be converted to a sealed TO can package by customer request. Please contact Tech Support for details.
1550 nm - 1650 nm TO Can Laser Diodes
Note: The rows shaded green below denote single-frequency laser diodes.
Please see the the blue info icons () above for absolute maximum power and current specifications. Do not exceed these values, whichever occurs first.
Laser diodes with a built-in monitor photodiode can operate at constant power.
Single-Frequency Laser (Single Longitudinal Mode)
This diode is available from stock in an open header package. It can be converted to a sealed TO can package by customer request. Please contact Tech Support for details.
3.85 µm - 4.60 µm TO Can Fabry-Perot QCLs
Item #
Info
Center Wavelengtha
Power (Min)b
Max Operating Currentb
Package
Pin Code
Monitor Photodiode
Wavelength Tested
Spatial Mode
QF3850T1
3.85 µm (2597 cm-1)
200 mW
600 mA
Ø9 mmc
H
No
Yes
Single Mode
QF4050T1
4.05 µm (2469 cm-1)
300 mW
600 mA
Ø9 mmc
H
No
Yes
Single Mode
QF4600T2
4.60 µm (2174 cm-1)
200 mW
500 mA
Ø9 mmc
H
No
Yes
Single Mode
QF4600T1
4.60 µm (2174 cm-1)
400 mW
800 mA
Ø9 mmc
H
No
Yes
Single Mode
Fabry-Perot Lasers exhibit broadband emission. The center wavelength is defined as a weighted average over all the modes. Each device has a unique spectrum. To get the spectrum of a specific, serial-numbered device, click "Choose Item" below, then click on the Docs Icon next to the serial number of the device. If you need spectral characteristics different than those shown below, please contact Tech Support to request a custom laser.
Please see the the blue info icons () above for absolute maximum power and current specifications. Do not exceed these values, whichever occurs first.
The Ø9 mm package for these diodes is 4.30 mm (0.17") thick, which is more than the standard 1.50 mm (0.06"). The laser will still be compatible with all Ø9 mm laser mounts; please see the Drawing tab in the blue info icon () above for full package specifications.