Premium Edgepass Filter Kits


  • 10 Premium Mounted Edgepass Filters in Each Kit
  • Shortpass Filter Kits with Cut-Off Wavelengths from 450 to 1000 nm
  • Longpass Filter Cut-On Wavelengths from 500 to 950 nm or 1000 to 1500 nm

FKSPVIS

Premium Visible Shortpass Filter Kit

FKLPIR

Premium IR Longpass Filter Kit

FESH1000

Shortpass,
Cut-Off: 1000 nm

FELH0450

Longpass,
Cut-On: 450 nm
Related Items


Please Wait

Applications

  • Emission Filters in Fluorescence Applications
  • Order Sorting Filters for Photometry
  • Stray Light or Trim Filters to Eliminate any Unwanted Near Band Radiation
  • Raman Spectroscopy Filters
  • Astronomy Applications

Features

  • 10 Premium Ø25.0 mm Shortpass or Longpass Filters in Each Kit
  • Improved Durability and Transmission Compared to our Standard Filters
  • >90% Transmission in the Transmission Region (See Specs Tab)
  • Excellent Suppression in Rejection Region (OD > 5; See Specs Tab)
  • Anodized Aluminum Housing Rings Engraved with Item #s and
    Arrows Indicating the Design Propagation Direction

Thorlabs' Premium Edgepass Filter Kits each contain 10 mounted shortpass or longpass filters for isolating regions of the visible or IR spectrum. Each kit is shipped in a plastic storage case that protects the filters from damage and includes an information card that lists the filter item numbers, their respective cut-off or cut-on wavelengths, and their physical location within the kit.

With >90% transmission within the transmission region and an optical density (OD) >5 in the rejection region, these high-performance filters provide better transmission, steeper slopes, greater blocking, and increased durability when compared to our standard line of edgepass filters (see the Specs tab for comparison). Their durable, dielectric coatings are essentially modified quarter-wave stacks, using interference effects to isolate spectral bands. The coatings can withstand the normal cleaning and handling necessary when using any high-quality optical component.

Each filter is comprised of a hard-coated UV fused silica substrate mounted in an unthreaded Ø25.0 mm, 3.5 mm thick black anodized aluminum ring that is engraved with the item # and an arrow indicating the design propagation direction. The ring makes handling easier and enhances the blocking OD by limiting scattering. The filters can be mounted in our Filter Mounts, Filter Wheels, and SM1 Lens Tubes; note that retaining rings are needed to secure these filters in SM1-threaded (1.035"-40) components, since the filter's mount is unthreaded. We do not recommend removing the filter from its mount as the risk of damaging the filter is very high.

Premium Edgepass Filters Standard Edgepass Filters (for Comparison Purposes)
  Shortpass Longpass Shortpass Longpass
Transmission Region See Table Below to the Left See Table Below to Right 0.7λ to Cut-off λ Cut-on λ to 2200 nm
Transmission FESH0900: >90% Avg. (500 - 550 nm); >90% Abs. (550 - 880 nm)
All Other Premium Filters: >90% Abs. over Transmission Region
550 - 1000 nm: 80% Average
<550 nm: 70% Average
400 - 700 nm: 80% Average
750 - 1000 nm: 75% Average
>1000 nm: 70% Average
Cut-On or Cut-Off Tolerance <0.75% of Cut-Off λ ±3 nm ±3 nm (450 - 750 nm)
±15 nm (800 - 1000 nm)
±3 nm (400 - 750 nm)
±15 nm (800 - 1500 nm)
Rejection Region See Table Below to the Left See Table Below to Right 1.3 times Cut-Off 200 nm to Cut-On
Optical Density (OD) in Rejection Region OD > 5 (Absolute) OD = 4.0 - 6.0 OD = 4
Transmitted Wavefront Error λ/4 at 632.8 nma -
Slope Tolerance FESH0650 and FESH0900: <1.25%
All Other Premium Filters: <1.0%
4% - 5% 3%
Construction Hard-Coated Dielectric on
UVFS Substrate
Immersed Dielectric
Surface Quality 40-20 Scratch-Dig 80-50 Scratch-Dig
Substrate Material UV Fused Silicab Soda Lime or Equivalent
Diameter 25.0 mm (0.98") 1.0" (25.4 mm)
Clear Aperture Ø0.83" (Ø21.1 mm)
Thickness 0.14" (3.5 mm) 0.24" (6.1 mm)
Substrate Thickness 0.08" (2 mm) -
  • Measured using our Zygo GPI Interferometer. When scaled to provide a value at other wavelengths, the transmitted wavefront error is approximately λ/2 at 405 nm, λ/6 at 1064 nm, and λ/8 at 1550 nm.
  • Click Link for Detailed Specifications on the Substrate
Premium Longpass Filters
Item # Cut-On
λ
Transmission
Region
(T > 90%)
Rejection
Region
(OD > 5)
Transmission
Dataa
Equivalent
Standard
Filterb
FELH0500 500 nm 508 - 2150 nm 200 - 492 nm info info
FELH0550 550 nm 559 - 2150 nm 200 - 542 nm info info
FELH0600 600 nm 609 - 2150 nm 200 - 591 nm info info
FELH0650 650 nm 660 - 2150 nm 200 - 641 nm info info
FELH0700 700 nm 710 - 2150 nm 200 - 690 nm info info
FELH0750 750 nm 761 - 2150 nm 200 - 740 nm info info
FELH0800 800 nm 812 - 2150 nm 200 - 789 nm info info
FELH0850 850 nm 861 - 2150 nm 200 - 839 nm info info
FELH0900 900 nm 912 - 2150 nm 200 - 888 nm info info
FELH0950 950 nm 962 - 2150 nm 200 - 938 nm info info
FELH1000 1000 nm 1013 - 2150 nm 200 - 987 nm info info
FELH1050 1050 nm 1063 - 2150 nm 200 - 1037 nm info info
FELH1100 1100 nm 1114 - 2150 nm 200 - 1086 nm info info
FELH1150 1150 nm 1164 - 2150 nm 200 - 1136 nm info info
FELH1200 1200 nm 1215 - 2150 nm 200 - 1185 nm info info
FELH1250 1250 nm 1265 - 2150 nm 200 - 1235 nm info info
FELH1300 1300 nm 1316 - 2150 nm 200 - 1284 nm info info
FELH1350 1350 nm 1366 - 2150 nm 200 - 1334 nm info info
FELH1400 1400 nm 1417 - 2150 nm 200 - 1383 nm info info
FELH1500 1500 nm 1518 - 2150 nm 200 - 1482 nm info info
  • Please keep in mind that the data given is typical, and performance may vary from lot to lot, particularly outside of the specified region for each filter.
  • Each premium filter is compared with its closest equivalent standard filter. Please note that the transmission and rejection regions may vary slightly between items.

Optical Density Equation:
Optical Density Equation

Premium Shortpass Filters
Item # Cut-Off
λ
Transmission
Regiona
Rejection
Region
(OD > 5)
Transmission
Datab
Equivalent
Standard
Filterc
FESH0450 450 nm 400 - 444 nm 456 - 1200 nm info info
FESH0500 500 nm 400 - 494 nm 506 - 1200 nm info info
FESH0550 550 nm 400 - 543 nm 557 - 1200 nm info info
FESH0600 600 nm 400 - 592 nm 608 - 1200 nm info info
FESH0650 650 nm 400 - 640 nm 660 - 1200 nm info info
FESH0700 700 nm 400 - 690 nm 711 - 1200 nm info info
FESH0750 750 nm 400 - 740 nm 761 - 1200 nm info info
FESH0800 800 nm 500 - 789 nm 811 - 1500 nm info info
FESH0900 900 nm 500 - 880 nma 920 - 1500 nm info info
FESH1000 1000 nm 500 - 987 nm 1013 - 1500 nm info info
  • Absolute transmission is >90% over this wavelength range except for the FESH0900, which has >90% average transmission from 500 to 550 nm and >90% absolute transmission from 550 to 880 nm.
  • Please keep in mind that the data given is typical, and performance may vary from lot to lot, particularly outside of the specified region for each filter.
  • Each premium filter is compared with its closest equivalent standard filter. Please note that the transmission and rejection regions may vary slightly between items.

Optical Density Equation
Click for Details

The slope tolerance is defined as the percentage of the cut-on or cut-off wavelength required to transition from an OD of 5 (T ~ 0.001%) to 50% transmission (OD ~ 0.3). In this case, the slope tolerance is quoted as <1%, and this data set shows a span of approximately 6 nm from an OD of 5 to 50% transmission.

Damage Threshold Specifications
Item # Damage Threshold
FESH0600 3 J/cm2 (1064 nm, 10 ns, 10 Hz, Ø0.429 mm)
FESH0700 1.0 J/cm2 (532 nm, 10 ns, 10 Hz, Ø0.472 mm)
FESH1000 7.5 J/cm2 (1064 nm, 10 ns, 10 Hz, Ø0.516 mm)
FELH0550 1.0 J/cm2 (532 nm, 10 ns, 10 Hz, Ø0.472 mm)
FELH0950 0.25 J/cm2 (1064 nm, 10 ns, 10 Hz, Ø1.010 mm)
FELH1000 3.75 J/cm2 (1064 nm, 10 ns, 10 Hz, Ø0.516 mm)
FELH1050 0.1 J/cm2 (532 nm, 10 ns, 10 Hz, Ø0.360 mm)

Damage Threshold Data for Select Thorlabs' Premium Edgepass Filters

The specifications to the right are measured data for a selection of Thorlabs' premium hard-coated edgepass filters.

 

Laser Induced Damage Threshold Tutorial

The following is a general overview of how laser induced damage thresholds are measured and how the values may be utilized in determining the appropriateness of an optic for a given application. When choosing optics, it is important to understand the Laser Induced Damage Threshold (LIDT) of the optics being used. The LIDT for an optic greatly depends on the type of laser you are using. Continuous wave (CW) lasers typically cause damage from thermal effects (absorption either in the coating or in the substrate). Pulsed lasers, on the other hand, often strip electrons from the lattice structure of an optic before causing thermal damage. Note that the guideline presented here assumes room temperature operation and optics in new condition (i.e., within scratch-dig spec, surface free of contamination, etc.). Because dust or other particles on the surface of an optic can cause damage at lower thresholds, we recommend keeping surfaces clean and free of debris. For more information on cleaning optics, please see our Optics Cleaning tutorial.

Testing Method

Thorlabs' LIDT testing is done in compliance with ISO/DIS 11254 and ISO 21254 specifications.

First, a low-power/energy beam is directed to the optic under test. The optic is exposed in 10 locations to this laser beam for 30 seconds (CW) or for a number of pulses (pulse repetition frequency specified). After exposure, the optic is examined by a microscope (~100X magnification) for any visible damage. The number of locations that are damaged at a particular power/energy level is recorded. Next, the power/energy is either increased or decreased and the optic is exposed at 10 new locations. This process is repeated until damage is observed. The damage threshold is then assigned to be the highest power/energy that the optic can withstand without causing damage. A histogram such as that below represents the testing of one BB1-E02 mirror.

LIDT metallic mirror
The photograph above is a protected aluminum-coated mirror after LIDT testing. In this particular test, it handled 0.43 J/cm2 (1064 nm, 10 ns pulse, 10 Hz, Ø1.000 mm) before damage.
LIDT BB1-E02
Example Test Data
Fluence # of Tested Locations Locations with Damage Locations Without Damage
1.50 J/cm2 10 0 10
1.75 J/cm2 10 0 10
2.00 J/cm2 10 0 10
2.25 J/cm2 10 1 9
3.00 J/cm2 10 1 9
5.00 J/cm2 10 9 1

According to the test, the damage threshold of the mirror was 2.00 J/cm2 (532 nm, 10 ns pulse, 10 Hz, Ø0.803 mm). Please keep in mind that these tests are performed on clean optics, as dirt and contamination can significantly lower the damage threshold of a component. While the test results are only representative of one coating run, Thorlabs specifies damage threshold values that account for coating variances.

Continuous Wave and Long-Pulse Lasers

When an optic is damaged by a continuous wave (CW) laser, it is usually due to the melting of the surface as a result of absorbing the laser's energy or damage to the optical coating (antireflection) [1]. Pulsed lasers with pulse lengths longer than 1 µs can be treated as CW lasers for LIDT discussions.

When pulse lengths are between 1 ns and 1 µs, laser-induced damage can occur either because of absorption or a dielectric breakdown (therefore, a user must check both CW and pulsed LIDT). Absorption is either due to an intrinsic property of the optic or due to surface irregularities; thus LIDT values are only valid for optics meeting or exceeding the surface quality specifications given by a manufacturer. While many optics can handle high power CW lasers, cemented (e.g., achromatic doublets) or highly absorptive (e.g., ND filters) optics tend to have lower CW damage thresholds. These lower thresholds are due to absorption or scattering in the cement or metal coating.

Linear Power Density Scaling

LIDT in linear power density vs. pulse length and spot size. For long pulses to CW, linear power density becomes a constant with spot size. This graph was obtained from [1].

Intensity Distribution

Pulsed lasers with high pulse repetition frequencies (PRF) may behave similarly to CW beams. Unfortunately, this is highly dependent on factors such as absorption and thermal diffusivity, so there is no reliable method for determining when a high PRF laser will damage an optic due to thermal effects. For beams with a high PRF both the average and peak powers must be compared to the equivalent CW power. Additionally, for highly transparent materials, there is little to no drop in the LIDT with increasing PRF.

In order to use the specified CW damage threshold of an optic, it is necessary to know the following:

  1. Wavelength of your laser
  2. Beam diameter of your beam (1/e2)
  3. Approximate intensity profile of your beam (e.g., Gaussian)
  4. Linear power density of your beam (total power divided by 1/e2 beam diameter)

Thorlabs expresses LIDT for CW lasers as a linear power density measured in W/cm. In this regime, the LIDT given as a linear power density can be applied to any beam diameter; one does not need to compute an adjusted LIDT to adjust for changes in spot size, as demonstrated by the graph to the right. Average linear power density can be calculated using the equation below. 

The calculation above assumes a uniform beam intensity profile. You must now consider hotspots in the beam or other non-uniform intensity profiles and roughly calculate a maximum power density. For reference, a Gaussian beam typically has a maximum power density that is twice that of the uniform beam (see lower right).

Now compare the maximum power density to that which is specified as the LIDT for the optic. If the optic was tested at a wavelength other than your operating wavelength, the damage threshold must be scaled appropriately. A good rule of thumb is that the damage threshold has a linear relationship with wavelength such that as you move to shorter wavelengths, the damage threshold decreases (i.e., a LIDT of 10 W/cm at 1310 nm scales to 5 W/cm at 655 nm):

CW Wavelength Scaling

While this rule of thumb provides a general trend, it is not a quantitative analysis of LIDT vs wavelength. In CW applications, for instance, damage scales more strongly with absorption in the coating and substrate, which does not necessarily scale well with wavelength. While the above procedure provides a good rule of thumb for LIDT values, please contact Tech Support if your wavelength is different from the specified LIDT wavelength. If your power density is less than the adjusted LIDT of the optic, then the optic should work for your application. 

Please note that we have a buffer built in between the specified damage thresholds online and the tests which we have done, which accommodates variation between batches. Upon request, we can provide individual test information and a testing certificate. The damage analysis will be carried out on a similar optic (customer's optic will not be damaged). Testing may result in additional costs or lead times. Contact Tech Support for more information.

Pulsed Lasers

As previously stated, pulsed lasers typically induce a different type of damage to the optic than CW lasers. Pulsed lasers often do not heat the optic enough to damage it; instead, pulsed lasers produce strong electric fields capable of inducing dielectric breakdown in the material. Unfortunately, it can be very difficult to compare the LIDT specification of an optic to your laser. There are multiple regimes in which a pulsed laser can damage an optic and this is based on the laser's pulse length. The highlighted columns in the table below outline the relevant pulse lengths for our specified LIDT values.

Pulses shorter than 10-9 s cannot be compared to our specified LIDT values with much reliability. In this ultra-short-pulse regime various mechanics, such as multiphoton-avalanche ionization, take over as the predominate damage mechanism [2]. In contrast, pulses between 10-7 s and 10-4 s may cause damage to an optic either because of dielectric breakdown or thermal effects. This means that both CW and pulsed damage thresholds must be compared to the laser beam to determine whether the optic is suitable for your application.

Pulse Duration t < 10-9 s 10-9 < t < 10-7 s 10-7 < t < 10-4 s t > 10-4 s
Damage Mechanism Avalanche Ionization Dielectric Breakdown Dielectric Breakdown or Thermal Thermal
Relevant Damage Specification No Comparison (See Above) Pulsed Pulsed and CW CW

When comparing an LIDT specified for a pulsed laser to your laser, it is essential to know the following:

Energy Density Scaling

LIDT in energy density vs. pulse length and spot size. For short pulses, energy density becomes a constant with spot size. This graph was obtained from [1].

  1. Wavelength of your laser
  2. Energy density of your beam (total energy divided by 1/e2 area)
  3. Pulse length of your laser
  4. Pulse repetition frequency (prf) of your laser
  5. Beam diameter of your laser (1/e2 )
  6. Approximate intensity profile of your beam (e.g., Gaussian)

The energy density of your beam should be calculated in terms of J/cm2. The graph to the right shows why expressing the LIDT as an energy density provides the best metric for short pulse sources. In this regime, the LIDT given as an energy density can be applied to any beam diameter; one does not need to compute an adjusted LIDT to adjust for changes in spot size. This calculation assumes a uniform beam intensity profile. You must now adjust this energy density to account for hotspots or other nonuniform intensity profiles and roughly calculate a maximum energy density. For reference a Gaussian beam typically has a maximum energy density that is twice that of the 1/e2 beam.

Now compare the maximum energy density to that which is specified as the LIDT for the optic. If the optic was tested at a wavelength other than your operating wavelength, the damage threshold must be scaled appropriately [3]. A good rule of thumb is that the damage threshold has an inverse square root relationship with wavelength such that as you move to shorter wavelengths, the damage threshold decreases (i.e., a LIDT of 1 J/cm2 at 1064 nm scales to 0.7 J/cm2 at 532 nm):

Pulse Wavelength Scaling

You now have a wavelength-adjusted energy density, which you will use in the following step.

Beam diameter is also important to know when comparing damage thresholds. While the LIDT, when expressed in units of J/cm², scales independently of spot size; large beam sizes are more likely to illuminate a larger number of defects which can lead to greater variances in the LIDT [4]. For data presented here, a <1 mm beam size was used to measure the LIDT. For beams sizes greater than 5 mm, the LIDT (J/cm2) will not scale independently of beam diameter due to the larger size beam exposing more defects.

The pulse length must now be compensated for. The longer the pulse duration, the more energy the optic can handle. For pulse widths between 1 - 100 ns, an approximation is as follows:

Pulse Length Scaling

Use this formula to calculate the Adjusted LIDT for an optic based on your pulse length. If your maximum energy density is less than this adjusted LIDT maximum energy density, then the optic should be suitable for your application. Keep in mind that this calculation is only used for pulses between 10-9 s and 10-7 s. For pulses between 10-7 s and 10-4 s, the CW LIDT must also be checked before deeming the optic appropriate for your application.

Please note that we have a buffer built in between the specified damage thresholds online and the tests which we have done, which accommodates variation between batches. Upon request, we can provide individual test information and a testing certificate. Contact Tech Support for more information.


[1] R. M. Wood, Optics and Laser Tech. 29, 517 (1998).
[2] Roger M. Wood, Laser-Induced Damage of Optical Materials (Institute of Physics Publishing, Philadelphia, PA, 2003).
[3] C. W. Carr et al., Phys. Rev. Lett. 91, 127402 (2003).
[4] N. Bloembergen, Appl. Opt. 12, 661 (1973).

In order to illustrate the process of determining whether a given laser system will damage an optic, a number of example calculations of laser induced damage threshold are given below. For assistance with performing similar calculations, we provide a spreadsheet calculator that can be downloaded by clicking the button to the right. To use the calculator, enter the specified LIDT value of the optic under consideration and the relevant parameters of your laser system in the green boxes. The spreadsheet will then calculate a linear power density for CW and pulsed systems, as well as an energy density value for pulsed systems. These values are used to calculate adjusted, scaled LIDT values for the optics based on accepted scaling laws. This calculator assumes a Gaussian beam profile, so a correction factor must be introduced for other beam shapes (uniform, etc.). The LIDT scaling laws are determined from empirical relationships; their accuracy is not guaranteed. Remember that absorption by optics or coatings can significantly reduce LIDT in some spectral regions. These LIDT values are not valid for ultrashort pulses less than one nanosecond in duration.

Intensity Distribution
A Gaussian beam profile has about twice the maximum intensity of a uniform beam profile.

CW Laser Example
Suppose that a CW laser system at 1319 nm produces a 0.5 W Gaussian beam that has a 1/e2 diameter of 10 mm. A naive calculation of the average linear power density of this beam would yield a value of 0.5 W/cm, given by the total power divided by the beam diameter:

CW Wavelength Scaling

However, the maximum power density of a Gaussian beam is about twice the maximum power density of a uniform beam, as shown in the graph to the right. Therefore, a more accurate determination of the maximum linear power density of the system is 1 W/cm.

An AC127-030-C achromatic doublet lens has a specified CW LIDT of 350 W/cm, as tested at 1550 nm. CW damage threshold values typically scale directly with the wavelength of the laser source, so this yields an adjusted LIDT value:

CW Wavelength Scaling

The adjusted LIDT value of 350 W/cm x (1319 nm / 1550 nm) = 298 W/cm is significantly higher than the calculated maximum linear power density of the laser system, so it would be safe to use this doublet lens for this application.

Pulsed Nanosecond Laser Example: Scaling for Different Pulse Durations
Suppose that a pulsed Nd:YAG laser system is frequency tripled to produce a 10 Hz output, consisting of 2 ns output pulses at 355 nm, each with 1 J of energy, in a Gaussian beam with a 1.9 cm beam diameter (1/e2). The average energy density of each pulse is found by dividing the pulse energy by the beam area:

Pulse Energy Density

As described above, the maximum energy density of a Gaussian beam is about twice the average energy density. So, the maximum energy density of this beam is ~0.7 J/cm2.

The energy density of the beam can be compared to the LIDT values of 1 J/cm2 and 3.5 J/cm2 for a BB1-E01 broadband dielectric mirror and an NB1-K08 Nd:YAG laser line mirror, respectively. Both of these LIDT values, while measured at 355 nm, were determined with a 10 ns pulsed laser at 10 Hz. Therefore, an adjustment must be applied for the shorter pulse duration of the system under consideration. As described on the previous tab, LIDT values in the nanosecond pulse regime scale with the square root of the laser pulse duration:

Pulse Length Scaling

This adjustment factor results in LIDT values of 0.45 J/cm2 for the BB1-E01 broadband mirror and 1.6 J/cm2 for the Nd:YAG laser line mirror, which are to be compared with the 0.7 J/cm2 maximum energy density of the beam. While the broadband mirror would likely be damaged by the laser, the more specialized laser line mirror is appropriate for use with this system.

Pulsed Nanosecond Laser Example: Scaling for Different Wavelengths
Suppose that a pulsed laser system emits 10 ns pulses at 2.5 Hz, each with 100 mJ of energy at 1064 nm in a 16 mm diameter beam (1/e2) that must be attenuated with a neutral density filter. For a Gaussian output, these specifications result in a maximum energy density of 0.1 J/cm2. The damage threshold of an NDUV10A Ø25 mm, OD 1.0, reflective neutral density filter is 0.05 J/cm2 for 10 ns pulses at 355 nm, while the damage threshold of the similar NE10A absorptive filter is 10 J/cm2 for 10 ns pulses at 532 nm. As described on the previous tab, the LIDT value of an optic scales with the square root of the wavelength in the nanosecond pulse regime:

Pulse Wavelength Scaling

This scaling gives adjusted LIDT values of 0.08 J/cm2 for the reflective filter and 14 J/cm2 for the absorptive filter. In this case, the absorptive filter is the best choice in order to avoid optical damage.

Pulsed Microsecond Laser Example
Consider a laser system that produces 1 µs pulses, each containing 150 µJ of energy at a repetition rate of 50 kHz, resulting in a relatively high duty cycle of 5%. This system falls somewhere between the regimes of CW and pulsed laser induced damage, and could potentially damage an optic by mechanisms associated with either regime. As a result, both CW and pulsed LIDT values must be compared to the properties of the laser system to ensure safe operation.

If this relatively long-pulse laser emits a Gaussian 12.7 mm diameter beam (1/e2) at 980 nm, then the resulting output has a linear power density of 5.9 W/cm and an energy density of 1.2 x 10-4 J/cm2 per pulse. This can be compared to the LIDT values for a WPQ10E-980 polymer zero-order quarter-wave plate, which are 5 W/cm for CW radiation at 810 nm and 5 J/cm2 for a 10 ns pulse at 810 nm. As before, the CW LIDT of the optic scales linearly with the laser wavelength, resulting in an adjusted CW value of 6 W/cm at 980 nm. On the other hand, the pulsed LIDT scales with the square root of the laser wavelength and the square root of the pulse duration, resulting in an adjusted value of 55 J/cm2 for a 1 µs pulse at 980 nm. The pulsed LIDT of the optic is significantly greater than the energy density of the laser pulse, so individual pulses will not damage the wave plate. However, the large average linear power density of the laser system may cause thermal damage to the optic, much like a high-power CW beam.


Posted Comments:
No Comments Posted

Premium Visible Shortpass Filter Kit

Item # Transmission
Dataa
Cut-Off
Wavelength
FESH0450 info 450 nm
FESH0500 info 500 nm
FESH0550 info 550 nm
FESH0600 info 600 nm
FESH0650 info 650 nm
Item # Transmission
Dataa
Cut-Off
Wavelength
FESH0700 info 700 nm
FESH0750 info 750 nm
FESH0800 info 800 nm
FESH0900 info 900 nm
FESH1000 info 1000 nm
  • The shaded regions in these graphs denote the spectral ranges over which we recommend using these filters. Please keep in mind that the data given is typical, and performance may vary from lot to lot, particularly outside of the shaded regions.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
FKSPVIS Support Documentation
FKSPVISNEW!Premium Visible Shortpass Filter Kit, Mounted, Set of 10
$1,244.50
Today

Premium Visible Longpass Filter Kit

'Item # Transmission
Dataa
Cut-On Wavelength
FELH0500 info 500 nm
FELH0550 info 550 nm
FELH0600 info 600 nm
FELH0650 info 650 nm
FELH0700 info 700 nm
Item # Transmission
Dataa
Cut-On Wavelength
FELH0750 info 750 nm
FELH0800 info 800 nm
FELH0850 info 850 nm
FELH0900 info 900 nm
FELH0950 info 950 nm
  • The shaded regions in these graphs denote the spectral ranges over which we recommend using these filters. Please keep in mind that the data given is typical, and performance may vary from lot to lot, particularly outside of the shaded regions.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
FKLPVIS Support Documentation
FKLPVISNEW!Premium Visible Longpass Filter Kit, Mounted, Set of 10
$1,244.50
Today

Premium IR Longpass Filter Kit

Item # Transmission
Dataa
Cut-On Wavelength
FELH1000 info 1000 nm
FELH1050 info 1050 nm
FELH1100 info 1100 nm
FELH1150 info 1150 nm
FELH1200 info 1200 nm
Item # Transmission
Dataa
Cut-On Wavelength
FELH1250 info 1250 nm
FELH1300 info 1300 nm
FELH1350 info 1350 nm
FELH1400 info 1400 nm
FELH1500 info 1500 nm
  • The shaded regions in these graphs denote the spectral ranges over which we recommend using these filters. Please keep in mind that the data given is typical, and performance may vary from lot to lot, particularly outside of the shaded regions.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
FKLPIR Support Documentation
FKLPIRNEW!Premium IR Longpass Filter Kit, Mounted, Set of 10
$1,244.50
Today