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ペリクルビームスプリッタ


  • Eliminates Ghosting
  • No Chromatic Aberration with Uncollimated Beams
  • Uncoated for Beam Sampling or Coated for Beamsplitting
  • Versions Available for Wavelengths from 300 nm to 5 µm

2-56 Tap
(2 Places)

BP133

(Ø1")

BP545B4

(Ø1/2")

BP145B1

(Ø1/2")

BP208

(Ø2")

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特長

  • ゴーストを排除
  • 集束ビームでも色分散なし
  • 光路長さの変化を最小化
  • コーティングなしバージョン(ビームサンプリング用)とコーティング付きバージョン(ビームスプリット用)から選択可能
  • Ø12.7 mm(Ø1/2インチ)Ø25.4 mm(Ø1インチ)Ø50.8 mm(Ø2インチ)3サイズ
  • 表面品質:スクラッチ&ディグ 40-20

このペリクルビームスプリッタには、Ø12.7 mm(Ø1/2インチ)Ø25.4 mm(Ø1インチ)Ø50.8 mm(Ø2インチ)のサイズがあり、300 nm5 µmの波長に対応するので、色分散を最小限に抑制することが求められる用途に適します(集束光が必要な用途)このペリクルビームスプリッタでは、実質的にゴーストが完全に除去できます。これは2つ目の面での反射が、1つ目の反射と重複するためです。しかしながらニトロセルロース膜の厚さがわずか数µmであるので、この製品には損傷を受けやすい性質があります。いずれのサイズにも、コーティング有りとコーティング無しのバージョンがあります。コーティング付きの光学素子を使用する時は、光が最初にコーティングが付いた表面に入射するようにしてください(注意:ビームスプリッタの刻印の無い側がコーティング付きの面です)。コーティング無しをお使いの場合は、光はどちらの面でも入射できます。

下の曲線のグラフでは、様々な波長において、異なるコーティングタイプやコーティング無しでビーム分岐比が異なる時の透過率を示しています。これらのデータは、無偏光、S偏光、P偏光の光が45°の角度で入射する条件で取得されています。通常は、S偏光よりもP偏光の方が透過率が高く、薄膜干渉効果による正弦波振動が存在します。干渉効果の詳細については「チュートリアル」タブをご参照ください。

Available Models (Click to View)
Wavelength RangeSplitting Ratio (R:T)
Uncoated,
400 nm - 2.4 µm
8:92
300 - 400 nm45:55
400 - 700 nm45:55
635 nm33:67
635 nm50:50
700 - 900 nm45:55
1 - 2 µm45:55
3 - 5 µm45:55

取付けオプション
いずれのペリクルビームスプリッタも、2個の#2-56ネジ切り付きの取付け用穴のある黒色アルマイト製のフレームに取り付けられています。これらの取付け用の穴は刻印側にあり、固定式キネマティック式のペリクルマウントに取り付けられます。 固定式とキネマティック式のペリクルマウントには、Ø12.7 mm(Ø1/2インチ)、Ø25.4 mm(Ø1インチ)、Ø50.8 mm(Ø2インチ)のペリクルが収納できるサイズがそれぞれあります。 当社ではケージキューブに取付け済みのペリクルビームスプリッタもご提供していますが、この製品ではペリクルがケージキューブに収納されているのでデリケートなペリクルの表面が保護され、簡単に30 mmのケージシステムに接続できます。633 nmでの偏光無依存型ビームスプリッターキューブ、プレート型ビームスプリッタ、ペリクルビームスプリッタの比較データについては「実験データ」タブをご参照ください。

なお、ペリクルビームスプリッタのサイズ(例:Ø25.4 mm(Ø1インチ)) がアルミニウム枠の外径ではなく、内径を示す点にご注意ください。つまりこれらのビームスプリッタは、標準のØ12.7 mm(Ø1/2インチ)Ø25.4 mm(Ø1インチ)Ø50.8 mm(Ø2インチ)の光学マウントに取り付けることはできません。詳しい寸法表は「仕様」タブに掲載されています。

取扱上の注意
当社のペリクルビームスプリッタに使用されている薄膜は非常に薄く繊細です。この薄膜には決して触れないようにご注意ください。これらのビームスプリッタは、圧縮空気や缶入りのエアによるクリーニングが可能ですが、空気の力が強すぎるとに薄膜が損傷を受ける恐れがありますのでご注意ください。気流は表面に対して小角度で当て、缶を表面から十分に離して薄膜を傷つけないようにしてください。

Drawing of Pellicle BS
SpecificationValue
Membrane MaterialNitrocellulose
Membrane Thickness2 μm, 5 µm for 300-400 nm Version
Index of Refraction (nd)1.5 (@ 550 nm)
Surface Quality40-20 Scratch-Dig
Transmitted Wavefront Erroraλ/2 (Typical)
Reflected Wavefront Errora<λ (Typical)
Frame Thickness3/16" (4.8 mm)
Inner Diameter, I.D.Ø1/2" Size: Ø1/2" (12.7 mm)
Ø1" Size: Ø1" (25.4 mm)
Ø2" Size: Ø2" (50.8 mm)
Outer Diameter, O.D.Ø1/2" Size: Ø0.75" (19.1 mm)
Ø1" Size: Ø1.38" (34.9 mm)
Ø2" Size: Ø2.38" (60.3 mm)
Mounting Hole SpacingbØ1/2" Size: 0.63" (15.9 mm)
Ø1" Size: 1.19" (30.2 mm)
Ø2" Size: 2.19" (55.6 mm)
Temperature Range-40 to 70 °C
  • 入射角 = 45o
  • 右の図に「A」で表示

当社で行った特性確認実験: ビームスプリッタの種類に基づく比較

当社のプレート型、キューブ型、ペリクル型のビームスプリッタでの偏光角度、分岐比、出力パワーの総計を比較しました。 無偏光型のビームスプリッタについてはそれぞれ似たような機能を有していますが、詳細な機能についてはビームスプリッタの種類によって異なります。 ビームスプリッタには、種類によってそれぞれ長所と短所があります。 変動に敏感な実験においては、適切なビームスプリッタの選択が重要となります。 ここでは、3種類の一般的な無偏光のビームスプリッタを詳しく分析して、光学的パラメータを比較しました。

この実験では、光源として旧製品の安定化HeNeレーザHRS015 を使用しました(代替品はHRS015Bとなります)。 レーザ光の偏光軸を45°とするために、直線偏光子を使用し、S偏光とP偏光が等しくビームスプリッタに入射するようにしました。 次に実験対象のビームスプリッタが光路中に配置され、分岐後のビーム光が適切なディテクタに送出されるようにセットしました。 このセットアップで、光学素子を出力する総光パワーの値、偏光状態、分岐比や入射角による影響に関する実験検証を行いました。

下記のプロット図は、3種類のビームスプリッタで得られた測定値を図示しています。 これらのグラフによって各光学素子の性能が簡単に比較できます。 左下のプロット図は、各光学素子の出力光パワーの総計を示しています。 この測定結果は、入射光のパワーに対する出力光パワーの総計の変化を示しています。 この結果をみると、プレート型とペリクル型のビームスプリッタの性能は類似していますが、キューブ型では内部で光が吸収されている可能性が推測されます。 さらにこのプロット図は、出力光パワーの総計と入射角の間に相関関係がないことを示唆しています。 下の中央にあるグラフでは、各光学素子での出射偏光状態を比較しています。 キューブ型では、反射光と透過光で同様の偏光角になっており、一方でプレート型では、偏光角の差異が最も大きくなっています。 右下のプロット図は、実験で得られた分岐比の結果をまとめており、各ビームスプリッタの種類ごとに、入射パワーの変化に対する分岐比の結果を示しています。 この結果から、50/50のパワーの分岐においては、プレート型ビームスプリッタが最も理想値に近い数値を示しています。 この実験に使用された装置や実験結果のまとめはこちらをクリックしていただくとご参照いただけます。

薄膜干渉効果

Reflectance Curve showing Thin-Film Interference Effects

右のグラフは透過率の波長特性を示しており、干渉効果によって生じる正弦波の変動(リップル)を表わしています。この現象はすべてのペリクルビームスプリッタに生じますが、データを示す際には平均化される場合があります。

右のグラフは、薄膜干渉効果による正弦波振動を平均化していない8:92ビームサンプラの実測反射率を示しています。 パターンの周波数と振幅は、いくつかの要素(フィルム厚さ、コーティングされている場合はコーティングの厚さ、入射光の入射角、入射光の偏光、ペリクルに入射する光の帯域幅など)によって変わります。

Q: 薄膜とは何ですか?
層の厚さが、入射光波長のオーダの場合、薄膜と呼ばれます。 空気中での光の波長と膜での光波長の関係は以下のように表されます。

Relationship between wavelength in air and film

ここに掲載されているペリクルビームスプリッタに関して「仕様」タブにある情報を代入すると550 nmでnfilm = 1.5となります。 したがってこの入射波長ではペリクル膜自体の波長は下のようになります。

Wavelength of 550 nm light in pellicle beamsplitter


Posted Comments:
Zachary Falgout  (posted 2019-05-15 05:50:08.267)
There is a line of zero reflectance that stretches through the middle of the profile in the reflected beam. Is this normal? -zack
YLohia  (posted 2019-06-13 08:51:16.0)
Hello Zack, thank you for contacting Thorlabs. We reached out to you directly at the time of your original post to gather more details such as beam profile, laser source used, setup, etc. If you still have this issue, please contact your local Thorlabs Tech Support team for further assistance (in this case, techsupport.uk@thorlabs.com).
stephanie.gilbertcorder  (posted 2018-06-20 10:34:50.23)
Hello, We noticed when imaging the reflected beam with a Thorlabs camera after the BP108, the image contains a double diffraction pattern we are able to isolate as being caused by the pellicle beamsplitter. Our beam is 800 nm, 35 fs, approximately 10 mW incident on the beamsplitter. Has anyone reported observing this before? We didn't expect to see what we believe to be thin film diffraction from both the front and back surface. Is this because the beamsplitter is uncoated? Thanks, Stephanie
YLohia  (posted 2018-07-02 02:47:11.0)
Hello Stephanie, thank you for contacting Thorlabs. This is quite normal for our pellicle beamsplitters. For more information please see the "Tutorial" tab on the same page: https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=898&Tabname=Tutorial
talan  (posted 2017-11-10 06:23:06.553)
Hello, I'm interested in Pellicle Beam Splitter but I'm curious about how to clean it, for example if it is contaminated by finger print or some other dirty stuff. Would you please help? Best Regards. Talan
tfrisch  (posted 2017-11-13 04:40:39.0)
Hello, Talan. Thank you for contacting Thorlabs. You may use compressed air, but only from a safe distance to keep the force low. These membranes can be damaged by contact, so I would not recommend cleaning with any solvent. Preventative care is the best practice. I will reach out to you directly to discuss handling procedures.
shyamal.mondal  (posted 2017-10-20 19:15:46.42)
Hi, I would like to know the damage threshold of the beam splitters (BP208 and BP245B2)? Is it possible to order a Pellicle Beamsplitter having 92:8 (R:T) ratio? Thanks.
nbayconich  (posted 2017-10-27 09:41:20.0)
Thank you for contacting Thorlabs. We recommend limiting the incident intensity to for the coated pellicles to <3W/cm^2. For the uncoated pellicles we recommend limiting the incident intensity to <20W/cm^2. We can offer custom split ratio pellicles. I will contact you directly with more details.
e0002163  (posted 2017-10-03 13:41:43.293)
hi, can i have the threshold of the BP245B2. I didn't find that on the website. thank you for your help.
nbayconich  (posted 2017-10-12 09:52:09.0)
Thank you for contacting Thorlabs. We do not have a damage threshold spec for the uncoated pellicles but we recommend limiting the incident intensity to <20W/cm^2. For the coated pellicle, you should keep the power density at <3 W/cm^2.
nizamtm  (posted 2017-07-19 21:34:55.883)
I expanded the laser beam entering of beamsplitter and captured the image. I found there are some line (maybe dust). I can send you the image if you want. My question is, how I can clean the beamsplitter to remove the dust?
tfrisch  (posted 2017-07-27 10:07:30.0)
Hello, thank you for contacting Thorlabs. I will reach out to you directly to discuss this. It would be helpful to see the images you have, and I want to discuss this before trying to clean the beam splitter as these films are rather fragile.
user  (posted 2016-03-03 16:23:21.257)
I ordered this product, and just received it today. No word yet on how well it functions as an optic. However, as a optical mechanic piece, it is extremely difficult to mount in your KM100BP mount, which was listed as compatible on your website. A thicker, double sided plastic ring, on both sides of the beamsplitter (not just the one where it is now) would be much more useful for mounting.
besembeson  (posted 2016-03-09 04:50:26.0)
Response from Bweh at Thorlabs USA: Thanks for the feedback. We will review your suggestion.
sandy.sutherland  (posted 2014-07-07 10:51:56.697)
Have previously used a number of the BP145B4 pellicles in varius test set-ups, but need a larger ~6" diameter device for a test set up being planned. Would a custom 3-5 micron 45/55 device at this larger diameter be a possible product? Thanks Sandy
cdaly  (posted 2014-08-06 05:49:59.0)
Response from Chris at Thorlabs: Thank you for your inquiry. It may be possible to offer this as a custom. I will contact your directly about this.
user  (posted 2014-06-10 19:14:14.487)
Hi. I'm planning to use the pellicle beam splitter, and I'm worryng that how fragile this thing is. Would you give us some practical information on the fragility, like handling cautions, installation cautions, and/or vibration tolerance, etc? Thanks.
besembeson  (posted 2014-06-12 10:56:21.0)
A response from Bweh at Thorlabs Newton-USA: Hello, Our pellicle beamsplitters are manufactured from an extremely thin and fragile membrane. The membrane thickness is in the order of a couple of microns. Please do not touch the membrane under any circumstances. Compressed or canned air should also not be used on these beamsplitters, as the force of the air is large enough to damage the membrane. Any vibrations of the unit should also be avoided. I hope this helps.
andreas.olk  (posted 2014-05-02 15:03:11.103)
Dear Tholabs Team, is there a specification for the damage threshold of the Pellicle Beam Splitters? Best Regards, Andreas Olk -- ------------------------------------------------- Andreas Olk Optische Systeme Optical Systems Fraunhofer-Institut für Lasertechnik ILT Steinbachstr. 15, 52074 Aachen, Germany Tel +49 241 8906-614 Fax +49 241 8906-121 andreas.olk@ilt.fraunhofer.de http://www.ilt.fraunhofer.de ------------------------------------------------- Besuchen Sie uns/Visit us: AKL'14 - International Laser Technology Congress 07.-09. Mai 2014, Aachen Eurogress Conference Center www.lasercongress.org Control 06.-09. Mai 2014, Stuttgart Fraunhofer-Gemeinschaftsstand, Halle 1/1502 ILA Berlin Air Show 20.- 25. Mai 2014, Berlin Fraunhofer-Gemeinschaftsstand Luft- und Raumfahrt Halle 6/6212 | Halle 4/4202 LASYS 24. - 26. Juni 2014, Stuttgart Themenpark "Laser additive manufacturing", Stand 4D77.1 Solution Center „meet the Experts“
jlow  (posted 2014-05-02 09:46:02.0)
Response from Jeremy at Thorlabs: For the uncoated pellicle beamsplitter, we recommend keeping the power density to be <20 W/cm^2 for CW. For the coated pellicle, you should keep the power density to be <3 W/cm^2.
htu  (posted 2014-01-16 12:01:27.18)
I am interested in pellicle BP145B3. It seems to display an unusual effect in my experiments. If it has a uniform dielectric (not metal) coating, as shown in some answers of this feedback section, can I find the same coating in your plate or cube beamsplitters? How thick is the coating on top of the substrate?
Georgy.Onishchukov  (posted 2013-10-08 18:44:37.8)
what is the CW damage power for uncoated pellicles?
jlow  (posted 2013-10-10 16:00:00.0)
Response from Jeremy at Thorlabs: We do not have a CW damage threshold spec for the uncoated pellicles but we recommend limiting the incident intensity to <20W/cm^2.
cumaisse  (posted 2013-08-20 10:15:46.407)
I'm using a 100 fs laser at 800 nm and was wondering what's the fluence or power or intensity this pellicle beam splitter are made for. I didn't find any information thereabout on the specs. Thank you in advance for your answer
tcohen  (posted 2013-08-22 14:54:00.0)
Response from Tim at Thorlabs: Thank you for contacting us. We have used only low fs pulse energies for these and do not yet have a maximum empirical value for fs damage threshold. However, we have had customers successfully use the BP145B2 with no damage and the following beam properties: Beam radius: 3 mm; Repetition rate: 1 kHz; Wavelength: 775 nm; Pulse width: about 250 fs; Pulse energy: 0.8 mJ.
jiri.vodak  (posted 2013-06-20 11:05:56.087)
Few comments below someone asked if pellicles can be used down to 350 nm, I would ask further if they can be used down to 200, 250 nm (also the possibility of 50/50 coating). As we plan to make comparative measurements fluctuations in transmittance shouldn't be of much concern for us. The questions is if we would get any intensity through at all. Usage of pellicle would simplify our apparatus significantly.
pbui  (posted 2013-06-21 14:41:00.0)
Response from Phong at Thorlabs: Nitrocellulose is not transmissive at 200 nm, but it should work for 250 nm. Depending on the thickness of the layer, you can expect anywhere from 55-70% Transmission with an average Reflection of 8% at 45° for unpolarized light. If you are interested in operating at 200 nm, then we may be able to offer a custom pellicle. We will contact you directly to discuss this.
user  (posted 2013-06-01 10:50:34.983)
It would be great if you could make pellicles that are HR coated (R~100%). When dealing with terahertz light, a common task is to superimpose a near-infrared optical pulse onto a terahertz one. Normally this is done using mirrors with holes in them or ITO (both of which reflect terahertz and transmit near-infrared). Alternatively, you can use pellicles to transmit terahertz and reflect infrared (as the pellicles are too thin to be seen by the terahertz). Unfortunately, if you use a 50:50 beamsplitter, you've lost half your light, not to mention the thin film effects of the beamsplitter on your spectrum. An HR-coated pellicle would be perfect for this sort of situation.
tcohen  (posted 2013-06-06 12:17:00.0)
Response from Tim at Thorlabs: Thank you for your feedback. Although this may not be useful as a catalog product for the majority of our users we can offer a lot of custom optics. I don’t see that you left any contact information but if you would like to pursue this product further please contact us at techsupport@thorlabs.com.
klaus.albers  (posted 2013-02-19 10:22:12.03)
Hello, is there any reason not to use the BP108 at 350 nm? Spec starts at 400 nm. Thank you and best regards Klaus Albers
tcohen  (posted 2013-02-21 15:04:00.0)
Response from Tim at Thorlabs to Klaus: Nitrocellulose does display stronger absorption as we go farther into the UV. You will find that the oscillations occur more rapidly and that you will have some increased absorption but you will certainly be able to use this at 350nm. If you aren’t working with higher powers, this will be fine.
tcohen  (posted 2012-09-20 12:09:00.0)
Response from Tim at Thorlabs: We currently don’t have tested data for fs pulses on this optic. Because the damage mechanism for fs pulses will be different than when working with ns pulses or CW, these values cannot be directly translated. I will contact you directly to discuss your equipment and to coordinate an effort to get more data.
phyvjc  (posted 2012-09-17 05:35:45.0)
Hello, can you tell me the damage threshold for this BS if used with a pulsed laser (100fs; 780nm)? Thank you very much, Jose Viana-Gomes Dep. of Physics - NUS, Singapore
tcohen  (posted 2012-09-05 13:44:00.0)
Response from Tim at Thorlabs: Our Pellicles utilize dielectric coatings. We may be able to offer this as a special. Please contact us at techsupport@thorlabs.com to discuss your requirements.
user  (posted 2012-09-05 16:24:40.0)
Has any of your Pellicle Beamsplitters a metal coating?
tcohen  (posted 2012-07-17 13:50:00.0)
Response from Tim at Thorlabs: Thank you for your feedback. I see you have also sent an email further detailing this request. I will contact you directly to discuss your application.
jinwang  (posted 2012-07-14 21:44:38.0)
Can you coat the pellicle beam splitters to get a 92:8 split ratio to match the 8:92 normal ratio?
tcohen  (posted 2012-06-28 11:13:00.0)
Response from Tim at Thorlabs: Pellicle beamsplitters are extremely fragile due to the thickness of the membrane. They should not be touched to clean and they should be kept from high humidity. Forceful compressed air should also be avoided as this can rupture the membrane. They must be very gently blown to clean. The light force of a small hand pumped air blower will work. We will add a cleaning tab to explain their fragility. Pellicles display an etalon effect as shown in the “Tutorial” tab. As we change the AOI, we are altering this etalon and the interference rolls off with respect to the wavelength. As such, we can effectively tune the R/T ratio within the amplitude of the interference effect by altering the AOI.
joekkrause  (posted 2012-06-27 21:32:11.0)
How sensitive to humidity are these beam splitters? What would you recommend them to be cleaned with? Can the transmission:reflection ratio be changed by rotating it off of the exact 45 degree angle?
bdada  (posted 2012-02-10 19:41:00.0)
Response from Buki at Thorlabs to Pkhulbe: Thank you for participating in our feedback forum. We will look into your request further and contact you directly.
Pkhulbe  (posted 2012-02-08 16:12:51.0)
Is it possible for Thorlabs to coat a pellicle that has both p-polarization and s-polarization reflectivity between 5-10% at 45 degree angle of incidence angle for 1200 nm? Thanks Pramod K. Khulbe
jvigroux  (posted 2011-11-15 10:57:00.0)
A response from Julien at Thorlabs: Dear Ernst, thank you for your inquiry! We unfortunately do not have this data at hand. We will contact you directly in order to see what is the most efficient way to obtain the data you need.
ernst.fill  (posted 2011-11-15 12:39:47.0)
Do you have any data on the absorptivity of the material the pellicle is made of (I suppose nitrocellulose). Our problem is that we have high average power. From the absorption we could calculate the temperature increase upon irradiation. Wavelengths are 1040 nm and 520 nm. Thanks, Ernst
jjurado  (posted 2011-06-15 12:05:00.0)
Response from Javier at Thorlabs to y_karp: Thank you very much for contacting us. Although we have not determined the laser induce damage threshold experimentally for our coated and uncoated pellicle beamsplitters; however, as a guideline, we recommend limiting the incident power density to 2 W/cm^2 for the coated pellicles, and 20 W/cm^2 for the uncoated ones. We currently do not have a pulsed LIDT spec. I will contact you directly for further support.
y_karp  (posted 2011-06-10 09:00:05.0)
Hi, I would like to use the pellicle beam splitter (BP245B1) with two Laser beams at 532 (Laser Pointer <14mw) and at 355 short laser pulses (6ns,500Hz,0.5 mJ). I would like to know what the damage threshold is. Thanks, Yahel Karpol.
Thorlabs  (posted 2010-11-29 18:36:24.0)
Response from Javier at Thorlabs to dheeruchief: The main soecifications that you want to take into account when choosing a beamsplitter are the desired operating wavelength, reflection/transmission split ratio, size, substrate, and thickness. Some applications are sensitive to ghosting effects, so this also needs to be considered. Also, damage threshold may become a concern when using sources with high power outputs.
dheeruchief  (posted 2010-11-29 05:18:43.0)
I am an engineer of Supplier company of optical instruments in India, but I want to read about beam Splitter and wants to know the importance of Specifications for collecting a complete Inquiry. Thanks & Regards Dhirendra Nath Macwin India Kanpur
Thorlabs  (posted 2010-07-06 10:31:20.0)
Response from Javier at Thorlabs to r.j.collins: thank you for your feedback. None of the different coatings of our pellicle beamsplitters is designed to perform in this manner. For example, the coating of the BP150, 50:50 split ratio (@ 635nm) yields, on average, about 70% transmission at 900 nm, and 38% reflection at 800 nm, which does not comply with your requirements. I would suggest considering our DMLP900 dichroic mirror/beamsplitter. It is designed for 90% reflection from 400-872nm and 90% transmission from 932-1300nm (http://www.thorlabs.com/NewGroupPage9.cfm?ObjectGroup_ID=3313).
r.j.collins  (posted 2010-07-05 11:29:49.0)
We are looking to use a pellicle beamsplitter at 45 degrees incidnece in an application whcih requires high transmission (>80%) of light with a wavelength of approximatly 900 nm to 1 um and high reflectivity (again >80%) of wavelengths below approximatly 800 nm. Are any of your pellicle beamsplitters suitable for this application?
apalmentieri  (posted 2009-12-07 19:37:44.0)
A response from Adam at Thorlabs: As an optical coating is shifted from an angle of incidence of 45 degrees to 0 degrees, the specified wavelength range is increased by ~10%. For instance, the 400-700nm range at 45 degrees would become ~440-770 at 0 degrees. Please note the uncoated pellicle should still exhibt 8/92 %R/%T performance at 0 degrees. We can also supply curves, but I will have to contact you for more information about the exact pellicles you were considering.
mwagnerikp.tu-darmstadt.de  (posted 2009-12-03 10:33:57.0)
I want to use a pellice beam splitter inside a TiSa Cavity to produce higher repetition rate. Therefore I need a incedent angle of zero degree. What are the reflection spezification of coated and uncoated splitter? thanks a lot
klee  (posted 2009-11-11 17:07:51.0)
A response from Ken at Thorlabs to marcoc: 1) Customer feedback has shown that an Uncoated Pellicle (BP108, BP208) can withstand pulsed power of at least 25 MW/cm2. 2) When using broadband light without a line spectrum the interference effects should "wash" out to the Average R/T as advertised. For a 20nm to 30nm bandwidth, we can specially select Pellicles by thickness and coating to meet most specifications at a specific angle, wavelength, and incoming state of polarization (or unpolarized). We would provide a transmission scan with the part to show the results. The wider the bandwidth, the thinner the pellicle has to be to try to cover the full range. Please let us know if you would like a quotation for this.
marcoc  (posted 2009-11-10 16:50:24.0)
Hi, I would like to use the pellice beamsplitter with short laser pulses (coming out of a 50fs amplifier). I have 2 questions: 1. damage threshold 2. is there any problem in using it with "broad band" light ? Im afraid that when having 20-30nm bandwidth I might have strange interference between the different components. Thanks, marco cammarata
apalmentieri  (posted 2009-07-01 20:09:19.0)
A response from Adam at Thorlabs: Most of the pellicles we provide have a dielectric coating that provides the beamsplitting properties. We have done custom metal coating on these beamsplitters in the past. I will contact you via email to get more information about your specific coating needs.
tesar  (posted 2009-07-01 18:01:54.0)
Specification of coating material would be useful. I need a pellicle with a metal coating.
apalmentieri  (posted 2009-06-25 16:46:30.0)
A response from Adam at Thorlabs to G.moss1: We currently do not specify an exact tolerance on the thickness. A nominal tolerance would be +/- 2um, so 1.76um is very close to being within specification. It would be great if we could get some more information about the mathematic code. I will send you an email shortly.
g.moss1  (posted 2009-06-25 10:33:44.0)
I have worked through the maths regarding the thin film effects on reflection and can reproduce the oscillatory plot shown in the tutorial. (I dont reproduce the smaller amplitude of oscillations at low wavelength as I did the ideal case.) The plot matches with the one in the tutorial for a pellicle thickness of 1.76 microns. Is this within spec? Do you have an error on the thickness? (i.e. is the thickness 2+-0.5 or 1.75+-0.01?) Im happy to share the mathematica code or its output with you if you are interested. Gregory Moss
alexey.chugreev  (posted 2009-04-18 08:03:09.0)
Dear Sir or Madam, I just sending you some my notes about pellicle beamsplitters. Alexey -------------------------- Dear ******, In some experiments I used pellicle uncoated (8/92%) beamsplitters from Thorlabs. Placed at some angle (it should be the Brewster angle for nitrocellulose I guess), it is sensitive to the light polarization. The contrast of such polarizer (for the reflected light only!) is not very good. Let us say, in the reflected light you could obtain 7% of p-polarization and 1% of s-polarization. Transmitted light will be slightly polarized (93% and 99%). But may be better if adjusted more carefully. Funny, no information on polarization properties exists at Thorlabs, Newport, Melles Griot etc web-sites.
Greg  (posted 2009-04-13 15:00:41.0)
A response from Greg at Thorlabs to diana.tsou: Thank you for your interest in our Pellicle Beamsplitters. We do not currently have data on the BP245B1 at 325 nm, but our Optics department will run a scan for you. Once I have this data I will e-mail you and update the graphs on this webpage.
diana.tsou  (posted 2009-04-13 13:32:08.0)
Do you have T/R data near 325 nm? Is nitrocellulose absorbing at 325 nm?
sbarry  (posted 2008-12-15 15:11:52.0)
I think we need to include a specification for damage threshold here. Newport, for example, shows a spec of 2W/cm^2. Another spec Newport has that we dont is thickness uniformity. Theirs is specd as +/-0.06 fringes/mm at 550nm.

当社ではビームを強度比や偏光に基づいて分岐する、様々なタイプのビームスプリッタを豊富にラインナップしています。フォームファクタの異なるものも多少ありますが、ペリクルや複屈折性結晶なども含めて、プレート型やキューブ型のビームスプリッタをご提供しております。ビームスプリッタの多くはマウント付きまたはマウント無しで取り揃えています。下記のリストでは当社のビームスプリッタの全ラインナップがご覧いただけます。 各項目のMore [+]をクリックすると、ご用意しているビームスプリッタの種類、波長、分岐比もしくは消光比、透過率、サイズをご確認いただけます。

偏光無依存型ビームスプリッタ

プレート型ビームスプリッタ
キューブ型ビームスプリッタ
ペリクルビームスプリッタ
  • 特に記載がない限り入射角は45°

偏光ビームスプリッタ

プレート型ビームスプリッタ
キューブ型ビームスプリッタ
複屈折性結晶ビームスプリッタ
  • 保護用筐体、ネジ切り無しリング、または偏光軸が表示されたシリンダにマウント済み
  • マウント無しの製品、保護用筐体または偏光軸が表示されたネジ切り無しシリンダにマウント済みの製品をご提供

その他のビームスプリッタ

その他のビームスプリッタ

ペリクルビームスプリッタ、コーティング無し、400~2400 nm、8:92 (R:T)

250~2500 nmの波長範囲の生データはこちらからダウンロードいただけます。

+1 数量 資料 型番 - ユニバーサル規格 定価(税抜) 出荷予定日
BP058 Support Documentation
BP058Ø1/2" Pellicle Beamsplitter, Uncoated for 8:92 (R:T) Split Ratio for 400-2400 nm
¥14,067
Today
BP108 Support Documentation
BP108Ø1" Pellicle Beamsplitter, Uncoated for 8:92 (R:T) Split Ratio for 400-2400 nm
¥12,555
Today
BP208 Support Documentation
BP208Ø2" Pellicle Beamsplitter, Uncoated for 8:92 (R:T) Split Ratio for 400-2400 nm
¥16,881
Today

ペリクルビームスプリッタ、コーティング付き、 300 ~ 400 nm、45:55 (R:T)

250~2500 nmの波長範囲の生データはこちらからダウンロードいただけます。

+1 数量 資料 型番 - ユニバーサル規格 定価(税抜) 出荷予定日
BP145B5 Support Documentation
BP145B5Ø1" Pellicle Beamsplitter, Coated for 45:55 (R:T) Split Ratio for 300-400 nm
¥24,900
Today
BP245B5 Support Documentation
BP245B5Ø2" Pellicle Beamsplitter, Coated for 45:55 (R:T) Split Ratio for 300-400 nm
¥26,306
3-5 Days

ペリクルビームスプリッタ、コーティング付き、400 ~700 nm、45:55 (R:T)

250~2500 nmの波長範囲の生データはこちらからダウンロードいただけます。

+1 数量 資料 型番 - ユニバーサル規格 定価(税抜) 出荷予定日
BP545B1 Support Documentation
BP545B1Ø1/2" Pellicle Beamsplitter, Coated for 45:55 (R:T) Split Ratio for 400-700 nm
¥26,306
3-5 Days
BP145B1 Support Documentation
BP145B1Ø1" Pellicle Beamsplitter, Coated for 45:55 (R:T) Split Ratio for 400-700 nm
¥24,900
Today
BP245B1 Support Documentation
BP245B1Ø2" Pellicle Beamsplitter, Coated for 45:55 (R:T) Split Ratio for 400-700 nm
¥27,854
Today

ペリクルビームスプリッタ、コーティング付き、635 nm、33:67 (R:T)

250~2500 nmの波長範囲の生データはこちらからダウンロードいただけます。

+1 数量 資料 型番 - ユニバーサル規格 定価(税抜) 出荷予定日
BP533 Support Documentation
BP533Ø1/2" Pellicle Beamsplitter, Coated for 33:67 (R:T) Split Ratio at 635 nm
¥23,915
3-5 Days
BP133 Support Documentation
BP133Ø1" Pellicle Beamsplitter, Coated for 33:67 (R:T) Split Ratio at 635 nm
¥22,368
3-5 Days
BP233 Support Documentation
BP233Ø2" Pellicle Beamsplitter, Coated for 33:67 (R:T) Split Ratio at 635 nm
¥25,321
3-5 Days

ペリクルビームスプリッタ 、コーティング付き、635 nm、50:50 (R:T)

250~2500 nmの波長範囲の生データはこちらからダウンロードいただけます。

+1 数量 資料 型番 - ユニバーサル規格 定価(税抜) 出荷予定日
BP550 Support Documentation
BP550Ø1/2" Pellicle Beamsplitter, Coated for 50:50 (R:T) Split Ratio at 635 nm
¥23,915
3-5 Days
BP150 Support Documentation
BP150Ø1" Pellicle Beamsplitter, Coated for 50:50 (R:T) Split Ratio at 635 nm
¥22,368
Today
BP250 Support Documentation
BP250Ø2" Pellicle Beamsplitter, Coated for 50:50 (R:T) Split Ratio at 635 nm
¥25,321
3-5 Days

ペリクルビームスプリッタ、コーティング付き、700 ~ 900 nm、45:55 (R:T)

250~2500 nmの波長範囲の生データはこちらからダウンロードいただけます。

+1 数量 資料 型番 - ユニバーサル規格 定価(税抜) 出荷予定日
BP545B2 Support Documentation
BP545B2Ø1/2" Pellicle Beamsplitter, Coated for 45:55 (R:T) Split Ratio for 700-900 nm
¥26,306
3-5 Days
BP145B2 Support Documentation
BP145B2Ø1" Pellicle Beamsplitter, Coated for 45:55 (R:T) Split Ratio for 700-900 nm
¥24,900
Today
BP245B2 Support Documentation
BP245B2Ø2" Pellicle Beamsplitter, Coated for 45:55 (R:T) Split Ratio for 700-900 nm
¥27,854
Today

ペリクルビームスプリッタ、コーティング付き、1 ~ 2 µm、45:55 (R:T)

250~2500 nmの波長範囲の生データはこちらからダウンロードいただけます。

+1 数量 資料 型番 - ユニバーサル規格 定価(税抜) 出荷予定日
BP545B3 Support Documentation
BP545B3Ø1/2" Pellicle Beamsplitter, Coated for 45:55 (R:T) Split Ratio for 1-2 µm
¥26,306
3-5 Days
BP145B3 Support Documentation
BP145B3Ø1" Pellicle Beamsplitter, Coated for 45:55 (R:T) Split Ratio for 1-2 µm
¥24,900
Today
BP245B3 Support Documentation
BP245B3Ø2" Pellicle Beamsplitter, Coated for 45:55 (R:T) Split Ratio for 1-2 µm
¥27,854
Today

ペリクルビームスプリッタ、コーティング付き、3 ~ 5 µm、45:55 (R:T)

0.25~20.0 µmの波長範囲の生データはこちらからダウンロードいただけます。

+1 数量 資料 型番 - ユニバーサル規格 定価(税抜) 出荷予定日
BP545B4 Support Documentation
BP545B4Ø1/2" Pellicle Beamsplitter, Coated for 45:55 (R:T) Split Ratio for 3-5 µm
¥26,306
3-5 Days
BP145B4 Support Documentation
BP145B4Ø1" Pellicle Beamsplitter, Coated for 45:55 (R:T) Split Ratio for 3-5 µm
¥24,900
3-5 Days

ペリクルマウント

Closeup view of pellicle taps

当社では、Ø12.7 mm(Ø1/2インチ)、Ø25.4 mm(Ø1インチ)およびØ50.8 mm(Ø2インチ)ペリクルビームスプリッタ用の固定式およびキネマティックマウントを販売しています。マウントに付属する2つの#2-56キャップスクリュを使って、ペリクルビームスプリッタを取り付けることができます。KM05BP/MはM4タップ穴を使ってポスト取付けが可能です。他のマウントはすべて、M4(または#8)ザグリ穴でポストに取り付けることができます。

固定式ペリクルマウントの詳細に関してはこちらをクリックしてください。
キネマティックペリクルマウントの詳細に関してはこちらをクリックしてください。

+1 数量 資料 型番 - インチ規格 定価(税抜) 出荷予定日
KM05BP Support Documentation
KM05BPキネマティックペリクルマウント、KM05シリーズ用
¥8,899
3-5 Days
+1 数量 資料 型番 - ユニバーサル規格 定価(税抜) 出荷予定日
BP057 Support Documentation
BP057固定式ぺリクルマウント、Ø12.7 mm(Ø1/2インチ)
¥3,623
3-5 Days
BP107 Support Documentation
BP107マウンティングフォーク、Ø25.4 mm(Ø1インチ)ペリクルビームスプリッタ用
¥4,854
Today
BP207 Support Documentation
BP207マウンティングフォーク、Ø50.8 mm(Ø2インチ)ペリクルビームスプリッタ用
¥6,156
Today
KM100BP Support Documentation
KM100BPキネマティックペリクルマウント、KM100シリーズ用
¥11,184
Today
KM200BP Support Documentation
KM200BPキネマティックペリクルマウント、KM200シリーズ用
¥15,335
Today
+1 数量 資料 型番 - ミリ規格 定価(税抜) 出荷予定日
KM05BP/M Support Documentation
KM05BP/Mキネマティックマウント、KM05シリーズ用
¥8,899
3-5 Days
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