光挡和光阱

Beam Blocks and Traps for CW or Pulsed Lasers
Solutions for up to 500 W
Essential Component for Laser Lab Safety

LB1

Beam Block,
Visible - NIR
Pulsed and CW
(Post Included)

BT610

Beam Trap,
Pulsed and CW

BTC30

Mounted in
30 mm Cage System

LB2L

Liquid-Cooled Beam Block,
IR Pulsed and CW

Please Wait

概述
激光安全
反馈

General Specifications^a
Item #	Laser Input	Wavelength Range	Max Average Power	Max Energy Density	Type
BT600(/M)	CW	200 nm - 3 µm	80 W^b	30 mJ/cm²	Trap
BT610(/M)	CW & Pulsed	400 nm - 2.5 µm	30 W	40 J/cm^{2 c,d}
BT620(/M)	CW & Pulsed	1 - 12 µm	50 W^e	25 J/cm^{2 c,d}
BTC30	CW	200 nm - 3 µm	5 W^f	30 mJ/cm^{2 c}
LB1(/M)	CW & Pulsed	400 nm - 2 µm	10 W^g	N/A	Block
LB2(/M)	CW & Pulsed	1 - 12 µm	80 W^h	25 J/cm^{2 c,d}	Block
LB2L(/M)	CW & Pulsed	1 - 12 µm	500 Wⁱ	25 J/cm^{2 c,d}	Liquid-Cooled Block

完整详细规格请查看表G1.2、G2.2和G3.6。
超过40 W输入功率时，外壳温度会超过100 °C。
由于材料的差异，每个装置的性能会有所变化。
在1064 nm，10 ns，10 Hz时的值
超过35 W输入功率时，外壳温度会超过100 °C。
超过2 W输入功率时，外壳温度会超过40 °C。
超过3 W输入功率时，外壳温度会超过60 °C。
超过45 W输入功率时，外壳温度会超过100 °C。
在25 °C水温的1 L/min流速下。使用LK220热电液体冷却器的最大推荐功率为250 W。

特性

激光安全防护器件可以减小激光损害的风险
可用于最高500 W或40 J/cm²(10 Hz)光束
适用波长：200 nm - 12 µm
可以安装接杆、30 mm或60 mm笼式系统

Thorlabs光阱和光挡系列是激光实验室常用的安全工具。它们用在光学系统终端吸收入射激光。光阱带有用于集成到30 mm笼式系统的4-40螺纹孔和用于接杆安装的8-32(M4)螺纹孔，可用于功率高至80 W的连续光(BT600)或连续光和脉冲光(BT610 & BT620)。BTC30快拆式光阱适合5 W连续激光，易于插入30 mm笼式系统中或从其中拆除，无需拆解组件。LB1(/M)可见光和近红外光挡提供较大的吸收靶面，适合高达10 W的脉冲光和连续光。LB2(/M)和LB2L(/M)红外光挡可吸收高达25 J/cm²的脉冲光束，而且兼容我们的60 mm笼式系统。LB2(/M)光挡吸收高达80 W的连续光束。LB2L(/M)红外光挡采用液体冷却设计，可承受500 W (CW)最大平均功率，并且有用于1/4英寸(6 mm)外径管子的接头。

我们也提供光纤遮光罩和遮光接头，用于光纤器件应用。

激光安全和分类

使用激光器时应遵循安全规章并使用正确的安全设备。眼睛极易受激光伤害，即使是极低的光强。Thorlabs提供一系列安全配件，可用于减少事故风险或伤害。可见光和近红外激光最有可能造成视网膜损伤，因为这些波长能够透过角膜和晶状体，而且晶状体会将激光能量聚焦到视网膜上。

安全实践和光安全配件

使用Class 3或4激光器时，必须佩戴激光防护眼镜。
工作中无论何时使用功率不可忽略的激光，Thorlabs建议佩带激光防护眼镜，因为螺丝刀等金属工具可能意外反射激光。
设计用于特定波长的激光安全眼镜应摆放在激光装置旁边明显的位置上，让佩戴者免受意外反射的激光照射。
安全眼镜上要标注可防护的波长范围以及那个范围内的最小光密度。
激光防护帘和激光防护布可以防止实验室其他区域受到高能激光。
遮光材料可以阻挡来自实验装置区域的直射和反射光束。
Thorlabs罩壳系统可用于遮盖光学装置，以此隔离或减小激光危害。
带尾纤的激光器在连接或断开其它光纤时必须先关闭，尤其激光功率水平高于10 mW。
所有激光需要终止于平台边缘，激光使用时实验室要关门。
激光光高不能和视线平齐。
在光学平台上开展实验，使得所有光束沿水平方向传播。
靠近光路工作时摘掉不必要的反射物件，比如首饰(戒指和手表等等)。
注意透镜和其它光学器件的前后表面都可能反射一部分入射光。
将激光功率设置为能够满足应用的最小值。
如果可能，在光路对准过程中降低输出功率。
使用光快门和滤光片减小光束功率。
在激光装置旁边或者房间里贴上正确的警示符号或标签。
在操作Class 3R或4激光器(即要求使用安全连锁的激光器)时，使用灯箱式激光安全标识。
激光观测屏不能替代合适的光阱。

激光等级

根据眼睛伤害和其它危害程度，激光器分为不同的几个等级。国际电工委员会(IEC)是制订和发布国际电气、电子及相关技术标准的的全球组织。IEC 60825-1标准文件概括了激光产品的安全问题。每种等级的激光器描述如下：

等级	描述	警示标识
1	这个等级的激光器在任何正常使用的情况下都是安全的，包括在光路中使用光学仪器进行观测。这个等级的激光器发射的激光在正常工作中不会导致伤害，并且不可能超过最大允许的曝光量(MPE)。Class 1激光器也包括一些封闭式高功率激光器，不去打开或关上激光器就不可能暴露在激光中。
1M	除了和望远镜和显微镜等光学组件一起使用时，Class 1M激光器就是安全的。这个等级的激光器发射大直径或发散光束，除非经过聚焦或成像光学元件缩束，一般不会超过MPE。但是，如果光束重新聚焦，伤害可能增加，等级相应改变。
2	Class 2激光限于1 mW以下连续可见光，这类激光器是安全的，因为眨眼反射会使眼部曝光时间限制在0.25 s。这个类别只适用于可见光(400 – 700 nm)。
2M	因为眨眼反射，这个等级的激光只要不通过光学仪器观察时就是安全的。这个激光等级也适用更大直径或发散激光光束。
3R	这个等级的激光只要以有限制的光束观测操作就是安全的。使用这个等级的激光器不可能超出MPE，但是也有低风险伤害。对于这个等级，可见连续激光输出功率被限制在5 mW。
3B	Class 3B激光如果眼睛直接曝光会造成危害。但是，漫反射没有危害。这个等级的操作安全措施包括在可能直接观测激光光束时佩戴防护眼镜。此外，需要安全互锁的激光器应和激光安全标识灯箱一起使用，使得安全灯箱不亮时就不能使用激光器。Class 3B激光器必需配备钥匙开关和安全互锁。
4	这个等级的激光可能造成皮肤伤害，也可能造成眼睛伤害，甚至是观测漫反射光都可能。这些受伤风险也适用于光束的间接或非镜面反射，甚至明显哑光表面也可能造成伤害。它们也有火灾风险，因为可能点燃易燃材料。Class 4激光器必须配备钥匙开关和安全互锁。
除了上面相应的标志，所有的2级(或更高)激光器必须显示这个三角警示标识。

Posted Comments:

user (posted 2024-10-15 13:35:40.033)

Can you please give some more information about the warning about graphite in 'some lab environments'. It is not clear to me what the consequences of this are.

srydberg (posted 2024-10-16 10:24:00.0)

Thank you for reaching out to us at Thorlabs! I have reached out to you directly to discuss your application.

Craig Cahillane (posted 2024-06-05 18:14:23.373)

Would it be possible to replace the TR3 post with a TR2 post?

jdelia (posted 2024-06-06 10:34:19.0)

Thank you for contacting Thorlabs. The TR3 is not glued onto the LB1 assembly, so yes, you could simply unscrew it and replace it with a TR2 post.

user (posted 2024-04-04 09:32:27.473)

Dear all, What is the pressure drop of the LB2L/M ?

user (posted 2023-09-26 09:24:41.27)

Dear all, we have an high-power picosecond laser at 355nm (5ps pulses, RR 80MHz, 200mW average power). Can I use the LB1(/M)? Many thanks

cdolbashian (posted 2023-10-03 01:56:59.0)

Thank you for reaching out to us with this inquiry Stefano. Unfortunately we do not have this type of test data. However, since this laser has a low average power, and these heat sinks are meant to diffuse the power of the laser into heat, it is likely that there will be no issue using this component with your laser. For safety purposes, you should validate it in a controlled experiment before implementing into your full experimental design. I have contacted you to share a bit more info regarding this topic.

Stefanie M (posted 2023-01-16 09:31:11.973)

Dear Thorlabs team, I am looking for a beam trap for a pulsed tunable laser in the range 210-2600nm. Can I use either BT600 or BT610 for this application? The laser has a 10,000Hz rep rate and 7ns pulse length, below 400nm the pulse energy is 3-8µJ, above 400nm the pulse energy goes up to 75µJ.

fnero (posted 2023-01-27 10:03:27.0)

Thank you for your question. As your laser specifications do not exactly meet the specifications for these beam traps, we have reached out to you to discuss your application in detail.

Anton R (posted 2023-01-05 15:13:35.643)

I'd love to see SM1/SM2 compatible beam dumps some day. Maybe for low power but with good supression of back scattering.

Sergio Rota (posted 2022-07-01 07:28:39.36)

I have a question in reference to this product I see that the operation range is from 1 to 12 microns I will use it for bloking IR at 1064nm, but I need to remove at the same time a pulsed signal at 532nm with 10microJules (1MHz, 10W, 1ps). It is possible with this device? Thanks

jdelia (posted 2022-07-14 02:38:23.0)

Thank you for contacting Thorlabs. I have contacted you directly to discuss your application further.

Chaman Gupta (posted 2022-06-17 00:46:01.83)

Can the BT600 be opened or closed? I work with 1070 nm laser with max. powers of about 70 W. I want to install a beam blocker (or trap/dump) to hold the laser interacting with my sample while I ramp my power, and then let the laser pass through my optical system once I'm at the high power. Any suggestions on parts?

cdolbashian (posted 2022-06-24 02:48:10.0)

Thank you for reaching out to us Chaman. The BT600 cannot be opened or closed, but depending on the intensity of your beam, perhaps you can include a shutter, or perhaps a mirror on a flipper mount to have the remote control of the beam path. I have contacted you directly to discuss such options.

Weikun Tian (posted 2021-03-24 14:17:30.373)

Hi, I would like to ask can LB1(/M) or LB2(/M) work with 808nm CW laser?

YLohia (posted 2021-03-25 10:53:21.0)

Hello, the LB1 can still be used for UV or IR light, but since it does not have the same housing like the LB2 nor is it a "beam trap", the blades stacked together will backscatter and reflect some light. We only spec this for the visible wavelength range because we cannot recommend it for IR light, which is more dangerous when scattered. The LB2 should be usable to some degree at lower wavelengths (for example 808 nm) than the rated >1 um, but we cannot provide guarantees for using it for this purpose since this is not the design intent of the product. We would expect the temperature to increase more at <1um and thus, the maximum rated power values will be lower for wavelengths below 1 um.

Thomas Pinoteau (posted 2020-12-04 05:29:34.133)

Hi, we have a BT620(/M) beam dump and I'd like to know if it would work from 200nm to 1µm with a pulsed laser, and if not, why ? Thank you in advance. Thomas

YLohia (posted 2020-12-08 02:19:04.0)

Hello Thomas, thank you for contacting Thorlabs. The limits specified for the BT620 are set regarding item integrity and personnel safety. Due to limitations in our testing capabilities, we do not have any specific test data reaching below 500 nm. The BT620 and BT620/M can be used all the way down to the UV range but we can not guarantee the stated power and energy specifications. The back scatter, on the other hand, will improve due to the material’s higher absorption of shorter wavelengths. Unfortunately, we can’t guarantee the performance of the beam trap since, when it comes to pulsed sources, it needs to be tested with exact same laser parameters. It should work fine, but with reduced power and energy limits.

Dirk Poelman (posted 2020-01-22 16:27:14.353)

I would need a beam dump for an OPO (10 Hz, ~ 50 mJ/pulse, 5 ns), starting at 210 nm, up to 2000 nm. I would assume the BT610 cannot be used since it contains a glass filter, but would the BT620 still work (possibly with a lower absorption and higher reflection outside the specified wavelength range)? Thanks, Dirk

nreusch (posted 2020-01-30 05:05:47.0)

Hello Dirk, thank you for contacting Thorlabs. We have reached out to you directly to discuss the options for your application.

Jenny Liu (posted 2019-09-26 18:27:57.903)

We are using LB1/M in our Assy. MKS/Newport requires all components purchased to be 2015 RoHS-compliant now. We need a 2015 RoHS certificate for this part now. Please send it to me.

YLohia (posted 2019-09-27 11:09:13.0)

Hello, thank you for contacting Thorlabs. I have reached out to you with the RoHS certification for the LB1/M.

user (posted 2019-05-09 15:14:29.49)

I assume the BT620 uses the same graphite dump used in the LB2 since the same wavelength and damage levels are comparable. Is there any chance you will be coming out with a Beam Trap which can handle the same average power (80W) as the LB2 in a Beam Trap format? I really need a beam trap (so I can eliminate back scatter) that can handle 100 W average power between 1-2 um. Thanks! Van

YLohia (posted 2019-05-15 09:42:47.0)

Hello Van, yes, the BT620 uses the same graphite that is used in the LB2. The energy limitation is dependent on temperature. The trap can sustain higher power if it's irradiated over a shorter period of time or if it's actively cooled with a TEC on the back. Here, the glue will degrade if the temperature exceeds 200 deg C. Additionally, the anodization will also become discolored. Unfortunately, we are not planning on releasing a higher power version of this at the moment.

jos.grooteschaarsberg (posted 2019-03-04 14:04:12.41)

Common anodized aluminum is not "black" absorbing above approximate 750 nm. The specification is up to 3 µm. Do you have a reflectivity graph for the material of this beamdump ?

YLohia (posted 2019-04-05 12:16:58.0)

Hello, thank you for contacting Thorlabs. The BT600 would be fine to use at 750nm. We reached out to you with the reflectivity information at the time of the posting of this feedback.

ahb (posted 2018-04-24 10:15:49.75)

Is it possible to attach another Optical Posts to the LB1? I think the included post is to long for my project.

llamb (posted 2018-04-24 07:33:02.0)

Hello, thank you for contacting Thorlabs. Yes, you can mount any of our posts with a #8-32 setscrew into the LB1. The LB1 includes the 3" long TR3 post, so perhaps our TR1 or TR2 posts would be better for your application.

dconnell (posted 2017-08-14 10:12:57.7)

What is the difference between the beam dumps and beam traps? Also, when would one use a Ø1/2" Lens Tube attached directly to the input aperture to shield the laser beam path? What do you mean by shielding the laser beam path?

tfrisch (posted 2017-09-07 09:18:25.0)

Hello, thank you for contacting Thorlabs. A beam block is an absorbing surface where as a trap has a small aperture to mitigate scattered light as well. Shielding with a lens tube will help keep anything (like fingers) out of the beam path before it is properly trapped. We will reach out to you directly to discuss your application.

azat.sharipov (posted 2017-05-16 14:09:24.07)

Hello, I would like to know which absorptive material is used in LB1M beam block and how sensitive it is to the environment. Is it also possible to disassemble it and take out the absorptive part? Thanks, Azat

nbayconich (posted 2017-05-31 09:25:59.0)

Thank you for contacting Thorlabs. The absorptive materials in the LB1M Beam Block are stainless steel razor blades. It is advised not to remove the absorptive materials in these beam blocks. A techsupport representative will contact you directly.

martin.gersing (posted 2016-10-21 10:50:47.033)

Dear Thorlabs, we would like to use the LB2 Beam Block as a Beam Dump for our measurements. We use a CW Diode-Laser with an average Power of approx. 300W (significantly higher than the stated maximum average Power) however the Beam Diameters are relatively large (ranging from 13mm to 28mm) as it is a collimated Beam. Could we still use the LB2, if we only exposed it to the Laser Beam for a short time with sufficient cooldown phases?

jlow (posted 2016-10-25 08:32:35.0)

Response from Jeremy at Thorlabs: You can use this but you need to adjust the exposure time accordingly. If the temperature gets to around 150°C, the anodize aluminum will turn to a brown color due to degradation of the black dye. We also recommend keeping the temperature below 200°C and exposure time of <30 seconds to prevent the graphite plate from damage.

martin.gersing (posted 2016-09-22 13:09:39.8)

Dear Thorlabs, is the LB2 Beam Block suitable for absorbing a wavelength of 980nm?

jlow (posted 2016-09-23 02:02:31.0)

Response from Jeremy at Thorlabs: Yes, the LB2 beam block will still work at 980nm.

kedves (posted 2015-04-17 09:16:21.733)

Dear Thorlabs, Which beam trap do you recommend for a Ti:Sapphire femtosecond laser beam of 4 W average power, 1 kHz rep. rate, 35 fs pulse width, 800 nm wavelength? Unfocused beam diam. is about 1 cm, with a peak power of about 10^11 W/cm^2, but collimated beams may be factor of 10 smaller in area. Thanks

jlow (posted 2015-05-04 04:17:56.0)

Response from Jeremy at Thorlabs: The BT620 can work at 800nm as well so that's recommended for your case. I will contact you directly about this.

c.wedge (posted 2013-07-16 06:16:43.39)

I want to use the BT610/M with a Nd:YAG laser giving 5ns pulses at 20Hz at both 532nm and 355nm. I notice the specifications give a wavelength range of 400nm upwards; is damage likely to result from use in the UV if I remain below the rated power density or will I just get increased back scatter?

jlow (posted 2013-07-17 16:34:00.0)

Response from Jeremy at Thorlabs: Unfortunately we do not have complete material data below 400nm for the filter glass used in BT610(/M). However, it is estimated that no damage will occur if used at 355nm below the stated damage threshold.

s.greveling (posted 2013-04-04 04:22:03.153)

I want to use the BT600/M for a 1064 nm cw laser with a 20 W output. I want to make sure the convection is at a mininum and notice from the specs that with an input power of 40 W the housing is heated over 100 Degrees. What will the heating be with an input power of 20 W?

tcohen (posted 2013-04-11 10:18:00.0)

Response from Tim at Thorlabs: We have not tested at this power, but after modeling this (assuming 25C ambient) we would expect approximately 70C.

jlow (posted 2013-01-18 18:44:00.0)

Response from Jeremy at Thorlabs: The LB1 would not function as a beam dump for NIR. It would block the NIR beam but there's nothing to capture the small reflection.

lundblad (posted 2012-12-07 12:24:37.353)

Can I use the LB1 as a beamdump for 1064 nm?

tcohen (posted 2012-05-09 11:15:00.0)

Response from Tim at Thorlabs: Thank you for your feedback! The 40J/cm^2 value is representative of a 10ns pulse duration at a 10Hz rep rate. Higher rep rates will decrease the max average energy density and past 20Hz CW values should be used. The different operating mechanisms of the BT600 and BT610 make the BT600 more resistant to CW and the BT610 more resilient against pulsed beams. Although 40J/s is 40W, the BT610 is much more suited to take 40J/cm^2 in a 10ns pulse at 10Hz over one second than it is to handle this average power density in CW operation (400W/cm^2).

Robert (posted 2012-05-09 07:26:43.0)

Is there a typo in the spec for this? If the beam dump can take 40J/cm2, how come it can only take 15W/cm2 (unless the 40J the total energy for any exposure)? 40 Joules per second would be 40 Watts! Whatever the values are, do they apply to pulses in the nanosecond range?

Thorlabs (posted 2010-08-06 16:22:45.0)

Response from Javier at Thorlabs to last poster: Thank you for your feedback. We have no tested the maximum power density that the LB1 can withstand. We would recommend using the 10 W guideline specification conservatively.

user (posted 2010-08-05 10:10:15.0)

Hi Thorlabs, for the answer below, what would be the beam dia. for the 10W?

Thorlabs (posted 2010-08-03 19:12:10.0)

Response from Javier at Thorlabs to last poster: Thank you for your feedback. We do not have precise data for the damage threshold of the black coating on the LB1. However, you can expect deterioration and damage to the coating once the 10 W maximum recommended input is exceeded.

user (posted 2010-08-03 16:09:57.0)

Regarding your LB1, do you have a reference of damage threshold on the black coating?

Thorlabs (posted 2010-07-27 09:46:14.0)

Response from Javier at Thorlabs to JMStettler: Thank you for your feedback. The links for the drawings and spec sheets of the beam blocks/traps have been fixed. They should work now. I will send you the specification sheet for the BT510.

JMStettler (posted 2010-07-26 14:47:02.0)

The links for the spec sheets (under "Documents and Drawings") for BT510, BT600, and BT610 all seem to be broken. Where can I find this information? Under "Beam Trap Specs" I can find some information on the BT600 and BT610, but I dont see anything for the BT510. Is this information anywhere on your website? Thanks, JS

光挡

放大

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图G3.2 安装在Ø1/2英寸接杆和60 mm笼式系统里的LB2光挡

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图G3.1 移除面板的LB2光挡

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图G3.3 LB1(/M)光挡刻有型号和温度警示。

Click for Details
图G3.5 LB2L光挡的底座

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图G3.4 LB2L光挡带有管接头

可见-红外光挡吸收最高10 W的连续光或脉冲光
红外光挡吸收最高25 J/cm²的脉冲光
红外光挡提供液体冷却版本
- 兼容我们的LK220液体冷却器

LB1(/M)光挡吸收波长范围在400 nm - 2 µm的CW或脉冲激光光束。建议使用的最大功率是10 W，发货时预安装在长3英寸(75 mm)的Ø1/2英寸接杆上。这个接杆可以换成带8-32(M4)螺孔的Ø1/2英寸接杆或Ø1英寸接杆。

LB2(/M)和LB2L(/M)光挡吸收1 - 12 µm波长范围的CW和脉冲激光束。每个装置具有较大的1.97英寸 x 1.97英寸(50.0 mm x 50.0 mm)的入射孔径，还有一个用于保护石墨垫的面板。这些光挡具有4-40螺孔，用于集成到我们的60 mm笼式系统中。

LB2(/M) IR光挡建议使用的最大平均功率不能超过80 W (CW)，或者最大能量密度不能超过25 J/cm² (脉冲；由于材料性质的差异，每个光挡的性能会有所变化)。它的一面还有3个8-32 (M4)螺孔，用于安装Ø1/2英寸接杆或者Ø1英寸接杆。使用1.5 mm六角扳手(不包含)将前面板移除后，1.97英寸 x 1.97英寸(50.0 mm x 50.0 mm)入射孔径可增加到2.72英寸 x 1.97英寸(69.0 mm x 50.0 mm)。

LB2L(/M)光挡使用液体冷却设计，在25 °C使用1 L/min供水时能承受500 W (CW)最大平均功率。和LB2(/M)光挡相似，它还能用于能量密度不能超过25 J/cm²的脉冲光源(由于材料性质的差异，每个光挡的性能会有所变化)。这个光挡具有用于1/4英寸(6 mm)外径管子的紧固件；比如，我们的HPU6聚氨酯管子兼容LB2L光挡。在连接水或冷却液供应源时，比如我们的LK220液体冷却器，一键连接的紧固件让用户很容易把管子推进接头中。与这个冷却器一起使用时，推荐的最大平均功率为250 W (CW)。与水、乙醇溶液或乙二醇冷却液，比如我们的CDTX冷却液一起使用时，这个光挡能承受最高145 psi压强。这个装置还有12个8-32 (M4)螺孔，每侧三个，用于安装Ø1/2英寸接杆或者Ø1英寸接杆。

请注意，LB2(/M)LB2L(/M)光挡含有石墨，可能不适用于所有的实验室环境。光束功率超过10 W时，所有光挡会变得很热而无法接触。

Table G3.6 Specifications
Item #	Wavelength Range	Absorptive Material	Laser Type	Max Average Power	Max Average Power Density	Max Energy Density	Entrance Aperture	Operating Temperature Range	Pressure Rating	Tubing Outer Diameter^a
LB1(/M)	400 nm - 2 µm	Steel	CW and Pulsed	10 W^b	N/A	N/A	1.40" x 0.70" (35.6 mm x 17.8 mm)^c	N/A	N/A	N/A
LB2(/M)	1 - 12 µm	Graphite	CW and Pulsed	80 W^d	25 kW/cm^{2 e}	25 J/cm² ^e,f	1.97" x 1.97" (50.0 mm x 50.0 mm)	N/A	N/A	N/A
LB2L(/M)	1 - 12 µm	Graphite	CW and Pulsed	500 W^g	25 kW/cm²	25 J/cm² ^e,f	1.97" x 1.97" (50.0 mm x 50.0 mm)	0 °C to 150 °C	145 psi	1/4" (6 mm)

不包含管子
超过3 W输入功率时，外壳温度会超过60 °C。
推荐在正入射或接近正入射时使用，以减少镜面反射。
超过45 W输入功率时，外壳温度会超过100 °C。
由于材料的差异，每个光挡的性能会有所变化。
在1064 nm，10 ns，10 Hz时的值
在25 °C水温的1 L/min流速下。使用LK220热电液体冷却器的最大推荐功率为250 W。

+1 数量文档 产品型号 - 英制 单价 现货 / 发货日

LB1	光挡，400 nm - 2 µm，最大平均功率10 W，脉冲和连续波，包括TR3接杆

￥548.75

Today

LB2	光挡，1 - 12 µm，最大平均功率80 W，脉冲和连续波，8-32螺孔

￥1,684.97

2 Weeks

LB2L	Customer Inspired! 光挡，液体冷却式，1 - 12 µm，最大平均功率500 W，脉冲和连续波，8-32螺孔

￥4,426.09

2 Weeks

+1 数量文档 产品型号 - 公制 单价 现货 / 发货日

LB1/M 光挡，400 nm - 2 µm，最大平均功率10 W，脉冲和连续波，包括TR75/M接杆

￥548.75

Today

LB2/M 光挡，1 - 12 µm，最大平均功率80W，脉冲和连续波，M4螺孔

￥1,684.97

Today

LB2L/M Customer Inspired! 光挡，液体冷却式，1 - 12 µm，最大平均功率500 W，脉冲和连续波，M4螺孔

￥4,426.09

2 Weeks

光阱

放大

Click to Enlarge
图G1.1 激光收集筒安装在Ø1/2英寸接杆上，输入端安装了Ø1/2英寸透镜套管

散射和吸收激光能量
兼容30 mm笼式系统和Ø1/2英寸透镜套管
8-32(M4)螺孔用于安装接杆

激光收集筒是常用的实验室安全设备，用于吸收激光能量。我们提供不同型号，用于CW或脉冲激光。使用时，仅需简单将光束引入入射孔径。

这些激光收集筒带有SM05内螺纹输入孔径，并且兼容30 mm笼式系统。为了遮挡激光光路，可将Ø1/2英寸透镜套管直接安装在输入孔径上(请见图G1.1)。底部的8-3 (M4)安装孔用于安装接杆。

注意：BT620(/M)含有石墨，可能不适合所有的实验室环境。所有激光收集筒在功率超过10 W时都会变热。

Table G1.2 Specifications
Item #	Wavelength Range	Absorptive Material	Laser Type	Max Average Power	Max Average Power Density^a	Max Energy Density	Backscatter^b	Entrance Aperture	Max Acceptance Angle^c
BT600(/M)	200 nm - 3 µm	Anodized Aluminum	CW	80 W^d	150 W/cm²	30 mJ/cm²	2 x 10^-4 @ 633 nm	Ø0.43" (Ø11 mm)	±5°
BT610(/M)	400 nm - 2.5 µm	Absorptive Neutral Density Glass	CW and Pulsed	30 W	15 W/cm²	40 J/cm² ^f	9 x 10^-5 @ 633 nm
BT620(/M)	1 - 12 µm	Graphite	CW and Pulsed	50 W^e	25 kW/cm²	25 J/cm² ^f	1 x 10^-4 @ 633 nm 1 x 10^-4 @ 3.39 µm

由于材料差异，单个器件的性能可能不同。
总的积分背散射对入射光功率的占比。
为了保证最佳性能，从光轴任意方向测量。
输入功率大于40 W时外壳温度将超过100 °C。
输入功率大于35 W时外壳温度将超过100 °C。
1064 nm、10 ns、10 Hz，单个器件的性能可能因材料差异化而不同。

+1 数量文档 产品型号 - 英制 单价 现货 / 发货日

BT600 激光收集筒，200 nm - 3 µm，最大平均功率80 W，仅用于连续光

￥2,605.07

2 Weeks

BT610 激光收集筒，400 nm - 2.5 µm，最大平均功率30 W，用于脉冲光和连续光

￥3,281.32

2 Weeks

BT620 激光收集筒，1 - 12 µm，最大平均功率50 W，用于脉冲光和连续光

￥3,281.32

2 Weeks

+1 数量文档 产品型号 - 公制 单价 现货 / 发货日

BT600/M 激光收集筒，200 nm - 3 µm，最大平均功率80 W，仅用于连续光，公制

￥2,605.07

Today

BT610/M 激光收集筒，400 nm - 2.5 µm，最大平均功率30 W，用于脉冲光和连续光，公制

￥3,281.32

Today

BT620/M 激光收集筒，1 - 12 µm，最大平均功率50 W，用于脉冲光和连续光，公制

￥3,281.32

Today

快拆式光阱，用于30 mm笼式系统

放大

BTC30 mounted in 30 mm Cage
Click to Enlarge
图G2.1 BTC30光阱安装在30 mm笼式系统中

散射并吸收激光束能量
兼容30 mm笼式系统
快拆式挠性夹具用于稳固的笼式系统安装，无需拆解
Ø8 mm通光孔径

激光收集筒是一种用于吸收激光能量的激光实验室常用安全器件。这种快拆式光阱可以用于最高5 W的CW激光。它有一个挠性夹具，能够扣住30 mm笼式系统中的任意两根支杆。如需将光阱卡入笼杆，请确保光阱侧面的两个4-40固定螺丝(0.050英寸六角)足够松，允许通过挠性机制扣住笼杆。位置确定后，拧紧这两个固定螺丝，将光阱沿着笼杆固定。如需小幅度调整位置，只需稍微拧松固定螺丝，然后将光阱沿着笼杆滑动即可。

与上方出售的激光收集筒不同，这个激光收集筒没有直接安装接杆的螺孔。使用激光收集筒时请注意，如果激光功率高于2 W，收集筒将会发热，应小心避免触碰。

Table G2.2 Specifications
Item #	Wavelength Range	Absorptive Material	Laser Type	Max Average Power	Max Average Power Density	Max Energy Density	Backscatter^a	Entrance Aperture
BTC30	200 nm - 3 µm	Anodized Aluminum	CW	5 W^b	150 W/cm² ^c	30 mJ/cm^{2 b}	5 x 10^-3 @ 633 nm	Ø0.315" (Ø8 mm)

总的积分背散射对入射光功率的占比
输入功率大于2 W时外壳温度将超过40 °C
单个产品的性能可能会因为材料差异而有所区别