• Polarizes Wavelengths from 420 to 700 nm or 250 nm to 4 µm
  • High Transmission and Extinction Ratio
  • Protective Glass Cover


50.0 mm x 50.0 mm


25.0 mm x 25.0 mm


12.5 mm x 12.5 mm


Ø25.0 mm

Related Items

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Axis of Polarization Axis of Polarization

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WP50L-VIS250.0 mm x 50.0 mm Wire Grid Polarizer, 420-700 nm
LCP0522インチ角フィルタ用マウント、60 mmケージシステム対応、厚さ4 mmまで、#8-32タップ穴(インチ規格)
ER18Ø6 mmケージアセンブリーロッド、長さ 25.4 mm
UPH31Ø12 mm~Ø12.7 mmスイベル式ポストホルダ、バネ式六角固定つまみネジ付き、長さ3インチ (インチ規格)
View Metric Product List
WP50L-VIS250.0 mm x 50.0 mm Wire Grid Polarizer, 420-700 nm
LCP05/M250 mm角フィルタ用マウント、60 mmケージシステム対応、厚さ4 mmまで、M4タップ穴(ミリ規格)
PRM2/M1精密回転マウント、Ø50 mm~Ø50.8 mm光学素子用(ミリ規格)
ER18Ø6 mmケージアセンブリーロッド、長さ 25.4 mm
TR100/M1Ø12.7 mmポスト、M4ネジ、M6タップ穴付き、長さ100 mm(ミリ規格)
UPH75/M1Ø12 mm~Ø12.7 mmスイベル式ポストホルダ、バネ式六角固定つまみネジ付き、長さ75 mm (ミリ規格)


  • 広い視野
  • 高い消光比
    • >800:1 (-VIS)
    • 最高10 000:1 (-UB)
  • 偏光範囲:
    • 420~700 nm (-VIS)
    • 250 nm~4 µm (-UB)
  • 複数のサイズをご用意:
    • 12.5 mm x 12.5 mm (マウント無し)
    • Ø25 mm (マウント付き)
    • 25 mm x 25 mm (マウント無し)
    • 50 mm x 50 mm (マウント無し)

この偏光子は、溶融石英(-UB)またはEagle XG(-VIS)ガラス基板の間に挟まれた、平行に並べられた多数の金属ワイヤで構成されています。 このワイヤーグリッド偏光子は、高い透過率(「グラフ」タブ参照)と高い最高動作温度(マウント無しの正方形偏光子は200°C 、マウント付き円形偏光子は93°C )を有しており、従来のフィルム状の偏光子やホログラフィックワイヤーグリッド偏光子の代わりにお使いいただけます。 また、可視域ワイヤーグリッド偏光子(-VIS)は、基板の裏面とカバーガラスの両面に400~700 nmに対応したARコーティングが施されています。

ワイヤーグリッドは損傷しやすいので、このリスクを低減するためカバーガラスが付いています。 保護ガラスの無い製品に比べ、偏光子をクリーニングできるため製品の寿命が長くなります。

ワイヤーグリッド偏光子はワイヤに垂直な電界ベクトルの放射を透過させ、ワイヤに平行な電界ベクトルの放射を反射させます。 透過偏光の方向は、正方形偏光子では小さな丸印、円形偏光子では線によって示されています(右図を参照ください)。 表面反射により、反射光には、両方の偏光成分が含まれています。尚、ワイヤーグリッド偏光子上の丸印および線は、ワイヤの向きではなく偏光軸を示していますのでご注意ください(右図を参照ください)。

偏光子の消光比(ER)は、透過軸に対して垂直な偏光成分の減衰量を表しています。 消光比は、偏光子が偏光軸に対して最大となる時の透過率 (Tmax) と、その状態から90°回転させて、最小となる時の透過率(Tmin)から求められます。

Visible Wire Grid Polarizers
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Ultra Broadband Wire Grid Polarizers
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注:>2.6 μmの波長でも、超広帯域ワイヤーグリッド偏光子は溶融石英基板を透過した光に対しては偏光子として機能します。


Posted Comments:
user  (posted 2021-12-10 04:36:32.517)
Can you please clarify the specification "Angle of incidence +-20 deg". Is this acceptance range or does this mean that the incident light must have 20 deg AOI?
YLohia  (posted 2021-12-10 09:27:16.0)
Thank you for contacting Thorlabs. This refers to the acceptance range of the optic.
Gregor Schiwietz  (posted 2021-08-28 13:34:44.88)
How large is the Transmitted Wavefront Distortion for the Wire Grid Polarizers of types WP25M-VIS and WP25L-VIS?
YLohia  (posted 2021-09-09 03:38:54.0)
Thank you for contacting Thorlabs. While we don't formally spec the TWD for these optics due to the lack of comprehensive data, based on preliminary testing we expect it to be around ~lambda/4 P-V. Please note that since this is not a formal spec, we cannot provide any guarantees that the piece you receive will perform up to this standard.
Petros Gasparyan  (posted 2020-09-16 06:06:13.603)
Dear responsible pearson Hello. My name is Petros. I have a question about your VIS wire grid polarizers. Is it possible to use as a filter in cameras? If you have any information about their wavefront distortion, please inform. Best Regards Petros gasparyan.
YLohia  (posted 2020-09-17 02:38:23.0)
Hello Petros, thank you for contacting Thorlabs. It is indeed possible to use this as filter in cameras, but the mounting will depend on your camera hardware. I have reached out to you directly to discuss further.
Michael Lim  (posted 2020-09-07 14:12:59.933)
I am interested in using the WP25L-VIS within an extended cavity diode laser operating near 700nm. In order to do this, i need to calculate the diffraction of the reflected polarization component, which require knowledge of the spacing and thickness of the metallic wires in the grid. Can you please provide this data and/or comment on the diffraction behavior of the block polarization component? Please contact me at lim@rowan.edu at your earliest convenience. Thanks, Michael Lim
YLohia  (posted 2020-09-09 03:28:10.0)
Hello Michael, thank you for contacting Thorlabs. The wire pitch is 144nm, with a feature size of ~65nm and duty cycle of ~45/55 (Open/Close). Operationally, the wires interact with the light in a similar way as a thin film would. The transmitted light passes with minimal interaction with the wires and the reflected light ‘sees’ the wires practically as an Al mirror at those wavelengths. The back scatter would have minimal diffraction.
user  (posted 2019-08-29 20:08:39.103)
What is the uncertainty in the orientation of the wires with respect to the outer 50x50 mm square?
YLohia  (posted 2019-09-03 10:01:11.0)
Hello, the tolerance on the orientation of the polarization axis with respect to the outer square is ±0.5°.
ruizhi.zheng  (posted 2018-11-23 16:12:46.153)
Could you please provide the reflection graph of TE mode (the polarized light be reflected)?
nbayconich  (posted 2019-01-04 09:26:30.0)
Thank you for contacting Thorlabs. I will reach out to you directly with some data we have scanned internally. We will make this data available on our webpage once all the necessary transmission & reflection scans are completed.
Diane.Beamer  (posted 2017-07-07 16:55:43.433)
i have two Thorlabs WPM25M-VIS wire grid polarizers; i used one as a polarization generator and one as an analyzer. i get max transmission when the transmission axes are crossed. How is this possible? for instance i get over 4 mW when analyzer is at 90, and generator is at 0, and i get about 1 mW when both transmission axes are parallel to one another. i took about 40 readings in a calibration exercise, with consistent measurements. is it possible one of them is mismarked on transmission axis? i reversed the orientation of the generator but got the same thing.
tfrisch  (posted 2017-08-07 10:43:47.0)
Hello, thank you for contacting Thorlabs. Assuming there are no other optics in between them that may be birefringent, and assuming that you are referring to the engraving on the polarizer housing, and not a secondary mount (like a rotation mount), it sounds like at least one of them is mislabeled. I will reach out to you about replacing these.
Petr.bouchal  (posted 2017-05-24 15:21:43.423)
Hello, could you provide me with information on thickness of WP25M-VIS. I supposse that thickness 3.5mm includes housing of WP. I am interested in thickness of substrate plus protective glass. Thanks. Regards, P.B.
nbayconich  (posted 2017-06-12 02:33:34.0)
Thank you for contacting Thorlabs. The total thickness of just the WP25M-VIS polarizer itself without the mount is 1.53mm. A techsupport representative will contact you directly.
robert.carlson  (posted 2017-04-11 15:41:09.49)
I would appreciate a quote for a 50x50 optic (WP50L-UB) cut to provide four 15x15 pieces. (The 12.5x12.5 part is a little too small for my application.) I can accept best effort, looking for as much C.A. as possible on the 15x15 pieces. Please email me a custom quote for this. Thanks!
tfrisch  (posted 2017-04-19 05:01:56.0)
Hello, thank you for contacting Thorlabs. I will forward your request to our Tech Support team for quoting. Unfortunately, wire grid polarizers cannot be cut, so these would need to be made from scratch.
sibo  (posted 2017-04-08 10:25:19.133)
Why for the Ultra Broadband Wire Grid Polarizers the values of the extinction ratio given in the table and the ones given in the graph are so different? For instance between 600 and 2600 nm, the ER is 10000 form the graph and 1000 form the table.
tcampbell  (posted 2017-04-10 08:55:38.0)
Response from Tim at Thorlabs: thank you for your feedback. The graphs represent typical data, but performance may vary between production runs. The values in the tables further down on the page are guaranteed specifications for these items.
qkrwhdrbs  (posted 2017-02-07 05:10:08.293)
Hello. I am considering buy "WP25M-UB". Before I order it, I have to consider damage threshold. So Can you give me damage threshold imformation? Thank you.
tfrisch  (posted 2017-02-15 01:12:45.0)
Hello, thank you for contacting Thorlabs. I will reach out to you about your laser specs.
mostert  (posted 2016-07-23 17:43:19.033)
Question: Do you have ER and transmission curve data for light entering the WP25M-VIS at angles of incidence >20 degrees?
bernd-claus.weber  (posted 2016-06-13 15:36:47.087)
Question: What is the thickness of the actual wire grid layer? Is this wire grid layer exactly in the center of the glass substrate? Reason for these questions: We'd like to remove glass from both sides in order to get a thinner filter
besembeson  (posted 2016-06-15 09:58:52.0)
Response from Bweh at Thorlabs USA: You can't have the glass removed from both sides. The thickness of the wire grid on substrate is 0.7mm. There is a cover glass that has a thickness of 0.8mm. We can provide a special with the cover glass removed.
hl4  (posted 2016-04-01 18:16:26.227)
Do you also Extiction Ratio and Transmission Data for wavelength above 900 nm lets say up to 1100 nm?
besembeson  (posted 2016-04-05 09:13:23.0)
Response from Bweh at Thorlabs USA: Beyond 900nm, the transmission continues to drop and the ER fluctuates. I will share example data with you via email.
user  (posted 2016-01-07 18:05:55.623)
Another request for a damage threshold: I need to polarize a 120mJ/pulse, 20 Hz Excimer Laser at about 350 nm. Beam cross section about 2 cm². Would you consider that safe?
besembeson  (posted 2016-01-12 04:39:15.0)
Response from Bweh at Thorlabs USA: Thanks for contacting Thorlabs. We don't have test data yet for these. I will however need your pulse length (that will determine peak powers) to provide suggestions on using this. Please contact me at techsupport@thorlabs.com.
IGKIOU  (posted 2014-10-02 16:24:37.173)
Hi, are there larger versions of these polarizers available? I would be particularly interested in 50mm round and 75mm x 75 mm square versions of the VIS wire grid polarizers. Thank you in advance.
besembeson  (posted 2014-10-09 10:39:37.0)
Response from Bweh at Thorlabs: We can provide such larger custom polarizers. I will follow-up with you by email to know which version you would be interested in.
M.Eggens  (posted 2014-09-15 14:57:42.063)
Hi, which material (glue?) is used to bond both substrate and the cover glass? Is the bonding resistant to demineralised water? Thanks
a.andreski  (posted 2014-04-24 10:17:28.55)
Hi. What is the wavefront distortion of these optics? Thanks!
jlow  (posted 2014-05-05 03:35:38.0)
Response from Jeremy at Thorlabs: The transmitted wave front error is typically <1/10 wave.
sayu  (posted 2014-03-24 10:32:48.737)
Can you provide the parallelism of polarizer?
cdaly  (posted 2014-04-10 05:36:57.0)
Response from Chris at Thorlabs: We have a tested value for parallelism spec of less than 1 arcmin. This is a typical value though, not a guarantee. If you would like to have some tested before purchase, we can set this up as a custom for you. I will contact you directly to discuss this further.
ndabashigeo  (posted 2014-02-20 19:17:14.25)
what is the damage threshold of these products at 532 nm pulsed?
jlow  (posted 2014-03-05 11:06:33.0)
Response from Jeremy at Thorlabs: We do not have data for the damage threshold for 532nm but it is estimated to be around 0.08J/cm^2 (blocking) and 0.21 J/cm^2 (passing) for 10ns pulse.
ryseck  (posted 2013-08-20 09:12:33.34)
Dear Ladies and Gentlemen, Do you have data for the damage threshold for wire grid polarizers when using a pulsed Nd:YAG-laser with a wavelength of 266 nm (4th harmonic) and a pulse duration of ~5 ns? Thank you very much, best wishes Gerald Ryseck
jlow  (posted 2013-09-17 16:19:00.0)
Response from Jeremy at Thorlabs. We do not have a spec for the laser damage threshold at 266nm for 5ns pulse. However, based on a past test, the damage threshold should be around 0.05 J/cm^2 (blocking) and 0.15 J/cm^2 (passing), tested with a 13ns pulse width, 100kHz rep rate, 266nm laser.
tcohen  (posted 2013-02-26 14:46:00.0)
Response from Tim at Thorlabs: Thank you for contacting us! You will find nominal transmission and extinction ratio data at 400nm available by clicking on the “Graphs” tab. The WP25M-UB is in stock and available to ship immediately. As for LIDT, we do not currently have data on this. We are looking into this and I have contacted you to keep you updated.
user  (posted 2013-02-11 13:08:34.953)
What mounts are available for the WP25L-UB if manual rotation of the polarizer is needed?
cdaly  (posted 2013-02-14 12:29:00.0)
Response from Chris at Thorlabs: Thank you for using our web feedback. We do not have a mount which would allow for this square optic to be rotated. We have recently released a 25mm round version which lends itself much more easily to being rotated in many of our standard rotation mounts. The part number is WP25M-UB.
tcohen  (posted 2012-05-08 09:31:00.0)
Response from Tim at Thorlabs: Thank you for your feedback! Our wire grid polarizers have a wide acceptance angle allowing for +/- 20 degrees AOI.
user  (posted 2012-05-05 21:08:12.0)
What is the recommended AOI for those polarizets?
tcohen  (posted 2012-03-29 11:31:00.0)
Response from Tim at Thorlabs: Thank you for your feedback! We offer a variety of polarizers to choose from and it is useful for prospective users to have this information before making a decision. Thank you for sharing this information!
user  (posted 2012-03-24 13:57:21.0)
These perform really well, but they also introduce a spectral modulation onto any polychromatic beam incident onto them, presumably due to interference between the sandwiched glass layers. This makes them less useful for spectrally-resolved applications.
bdada  (posted 2012-02-24 10:18:00.0)
Response from Buki at Thorlabs to udierksheide: Thank you for your feedback. We do not currently have tested damage threshold data for these wire grid polarizers but I will look into this further to advise if your light source is suitable. We do not currently have a solution for mounting this polarizer in our SM1 tubes but I will post an update after discussing this with our engineering team.
udierksheide  (posted 2012-02-16 14:02:40.0)
Dear, I would like to know the damage treshhold. I need 10J/cm2 10ns 10Hz @ 532nm or more. Please let me know the treshhold and how I could mount it in a SM1 compatible cube. Regards Uwe Dierksheide
bdada  (posted 2011-10-21 14:18:00.0)
Response from Buki at Thorlabs: To the last two posters, thank you for your feedback and for your interest in our wire grid polarizers. We do not have tested damage threshold data for the wire grid polarizers so we are unsure how it will perform with femtosecond lasers. Fused silica has a GVD of ~53 fs^2/mm from 500-900nm. Please contact TechSupport@thorlabs.com if you have further questions.
shaba82  (posted 2011-10-19 14:18:18.0)
Is this product applicable to femtosecond laser pulses? If it is, can you send me the group-delay dispersion(GDD) data of this product from 500-nm to 900-nm wavelength range?
falk.eilenberger  (posted 2011-09-22 17:05:41.0)
to whom it may concern, I am in need of a polarizer for a high power application of a fs-source. The source is rated at 1.5 Watts average power, with roughly 35fs pulse length (1 kHz) running at 800 (+/- 100) nm. Are your wrie-grid polarizers suitable such a laser beam? Thank you very much in advance Falk Eilenberger


当社では、ワイヤーグリッド、フィルム、方解石、α-BBO、ルチル、ならびにビームスプリッタを含むさまざまな偏光子をご用意しております。 ワイヤーグリッド偏光子のラインナップは、可視域から遠赤外域にも達する波長範囲に対応します。 ナノ粒子直線フィルム偏光子は最高で100 000:1の消光比を有しています。 また、その他のフィルム偏光子は、可視域から近赤外域までの光の偏光に使用できる製品としてお手軽な価格でご提供しております。 次に当社のビームスプリッタ偏光子は反射ビームの利用や、より完全に偏光された透過ビームの使用を可能にします。 最後に、α-BBO(UV域)、方解石(可視~近赤外域)、ルチル(近赤外~中赤外域)ならびに、オルトバナジン酸イットリウム(YVO4)(近赤外域~中赤外域)偏光子は、それぞれの波長範囲で100 000:1の高い 消光比を有する製品となっております。

偏光子の種類、波長範囲、消光比、透過率、ならびにサイズについては、下の表のMore [+]をクリックしてご覧ください。

Wire Grid Polarizers
Film Polarizers
Beamsplitting Polarizers
alpha-BBO Polarizers
Calcite Polarizers
Quartz Polarizers
Magnesium Fluoride Polarizers
Yttrium Orthovanadate (YVO4) Polarizers
Rutile Polarizers
  • 透過率特性をご覧になるにはグラフのアイコンをクリックしてください。 各特性データは、ある1つの基板またはコーティングの透過率をサンプルとして示しており、その特性は保証されているものではありません。
  • 偏光軸の印付きのマウント、ネジ切り無しリング、またはシリンダに取付け済み。
  • マウント無し、または偏光軸印付きのSM05ネジ付きマウントに取付け済みのタイプをご用意。
  • マウント無し、または偏光軸印付きのSM01ネジ付きマウントに取付け済みのタイプをご用意。
  • PBS519: TP:TS > 1000:1(平均値)
  • マウント無し、またはケージシステム対応キューブに取り付け済みのタイプをご用意。
  • 方解石は天然の物質で、350 nmあたりの典型的な透過率は約75%となります(Transmission欄をご覧ください)。
  • マウント無し、またはØ12.7 mmの筐体(ネジ切りなし)に取付け済みのタイプをご用意。
  • 方解石の透過率特性は、直線偏光が偏光子筐体に記されている偏光軸とアライメントしている場合に有効です。
  • Vコーティング(1064 nm)付きの製品は、型番末尾が「-C26」となっています。
  • マウント無し、または偏光軸印付きのマウントやネジ切り無しシリンダに取付け済みのタイプをご用意。

可視域ワイヤーグリッド偏光子、420~700 nm

SubstrateEAGLE XG
Polarization Wavelength Range420 - 700 nm
Extinction Ratioa>800:1 (Average Over Wavelength Range)
AR Coatingb400 - 700 nm (Ravg <1%)
Size12.5 mm x 12.5 mmØ25.0 mm25.0 mm x 25.0 mm50.0 mm x 50.0 mm
Dimensional Tolerance
(Length or Diameter)
±0.2 mm+0.0/-0.1 mm±0.2 mm
Clear Aperture10.5 mm × 10.5 mmØ19 mm21.0 mm × 21.0 mm48.0 mm × 48.0 mm
Thickness1.53 ± 0.20 mm3.5 ± 0.10 mm1.53 ± 0.20 mm
Angle of Incidence±20°
Thermal Expansion37.6 x 10-7/°C
Surface Quality80-50 Scratch-Dig
Operating Temperature-40 to 200 °C-40 to 93 °C-40 to 200 °C
  • 消光比 (ER)は、直線偏光を入射したときの最大透過率の最小透過率に対する比率です。偏光子の透過軸に対して入射光の偏光方向が平行のときに最大透過率、そこから偏光子を90°回転させると最小透過率が得られます。
  • 基板の裏面とカバーガラスの両面に施されています。
+1 数量 資料 型番 - ユニバーサル規格 定価(税抜) 出荷予定日
WP12L-VIS Support Documentation
WP12L-VIS12.5 mm x 12.5 mm Wire Grid Polarizer, 420-700 nm
WP25M-VIS Support Documentation
WP25M-VISCustomer Inspired! Ø25.0 mm Mounted Wire Grid Polarizer, 420-700 nm
WP25L-VIS Support Documentation
WP25L-VIS25.0 mm x 25.0 mm Wire Grid Polarizer, 420-700 nm
WP50L-VIS Support Documentation
WP50L-VIS50.0 mm x 50.0 mm Wire Grid Polarizer, 420-700 nm

超広帯域ワイヤーグリッド偏光子、250 nm~4 µm

SubstrateFused Silica
Polarization Wavelength Range250 nm - 4 µm
Extinction Ratioa250 nm - 4 µm: >10:1
300 nm - 4 µm: >100:1
600 nm - 4 µm: >1000:1
2.25 µm - 4 µm: >10 000:1
Transmission>75% (@ 450 nm)
Size12.5 mm x 12.5 mmØ25.0 mm25.0 mm x 25.0 mm50.0 mm x 50.0 mm
Dimensional Tolerance
(Length or Diameter)
±0.4 mm+0.0/-0.1 mm±0.4 mm
Clear Aperture10.5 mm × 10.5 mmØ19 mm21.0 mm × 21.0 mm48.0 mm × 48.0 mm
Thickness2.2 mm ±0.3 mm3.5 mm2.2 ±0.3 mm
Angle of Incidence±20°
Thermal Expansion5.5 x 10-7/°C
Surface Quality80-50 Scratch-Dig
Operating Temperature-40 to 200 °C-40 to 93 °C-40 to 200 °C-40 to 200 °C
  • 消光比 (ER)は、直線偏光を入射したときの最大透過率の最小透過率に対する比率です。偏光子の透過軸に対して入射光の偏光方向が平行のときに最大透過率、そこから偏光子を90°回転させると最小透過率が得られます。
+1 数量 資料 型番 - ユニバーサル規格 定価(税抜) 出荷予定日
WP12L-UB Support Documentation
WP12L-UB12.5 mm x 12.5 mm Wire Grid Polarizer, 250 nm to 4 µm
7-10 Days
WP25M-UB Support Documentation
WP25M-UBCustomer Inspired! Ø25.0 mm Mounted Wire Grid Polarizer, 250 nm to 4 µm
WP25L-UB Support Documentation
WP25L-UB25.0 mm x 25.0 mm Wire Grid Polarizer, 250 nm to 4 µm
7-10 Days
WP50L-UB Support Documentation
WP50L-UB50.0 mm x 50.0 mm Wire Grid Polarizer, 250 nm to 4 µm
7-10 Days