Buying Brewster Windows
Brewster windows are optical windows used at Brewster's angle, eliminating the need for anti-reflection coatings. They are used in gas lasers and other laser systems to minimize reflective losses and maintain polarization.
Making Good Purchase Decisions
RP Photonics helps to not only to find all relevant suppliers, but also to make good purchase decisions:
Learning Resources

With its comprehensive resources, RP Photonics helps you to well prepare purchase decisions:
- Encyclopedia article: Brewster windows
- Related articles: Brewster plates, depolarization loss
Aspects to Consider Before Buying
Some aspects to consider before buying Brewster windows: optical quality, surface finish, wavelength range, thermal stability, dimensions, mounting options, compatibility with laser systems, ease of integration, environmental resistance.
For responsible purchase decisions, we recommend applying good practices.
Find Suppliers for Brewster Windows
22 suppliers for Brewster windows are listed in the RP Photonics Buyer's Guide, out of which 2 present their product descriptions. Both manufacturers and distributors can be registered.
Suppliers with Advertising Package presenting their product descriptions | |
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![]() Your reliable partner for photonics innovations! EKSMA Optics, UABDvarcioniu St. 2B LT-10233 Vilnius Lithuania | ![]() EKSMA Optics offers uncoated Brewster windows made from N-BK7 or UV fused silica. |
![]() Precision Optics & Coatings for High Energy Laser Applications Perkins Precision Developments4110 North Valley Drive Longmont, CO 80504 United States | ![]() Perkins Precision Developments (PPD) manufactures Brewster windows in a variety of shapes and sizes from 2 mm to > 8” in diameter and with parallelism errors as low as 1 arcsecond. PPD manufactures precision plano substrates in a wide range of materials including fused silica, fused quartz, infrasil, N-BK7, YAG, silicon, SF11 and other high index glasses. |
Other Suppliers | |
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1T Optics Ltd China | |
Altechna UAB Lithuania | |
BMV Optical Technologies Inc. Canada | |
CASIX Inc. China | |
Chang Chun Jiu Tian Optoelectronics Co. Ltd. China | |
Crysmit Photonics Co., Ltd. China | |
Crystran Limited United Kingdom | |
Hind High Vacuum Company Pvt Ltd. India | |
ios Optics United States | |
Litech Optics Co., Ltd. China | |
Manx Precision Optics Isle of Man, IM9 2AP | |
Mountain Photonics GmbH Germany | |
Newlight Photonics Inc. Canada | |
Newport Corporation United States | |
Optico AG Switzerland | |
PreciSe Hyper-iMage Optics Ltd. China | |
Sinoceramics (USA), LLC United States | |
Solaris Optics S.A. Poland | |
Sunday Optics China | |
ULO Optics Ltd. United Kingdom |