Buying Etalons

Etalons are monolithic Fabry–Pérot interferometers inserted into laser beams for wavelength tuning. They are widely used in laser systems for precise control of the emission wavelength.
Making Good Purchase Decisions
As the most professional photonics purchasing portal, RP Photonics helps you to not only to find all relevant suppliers (not limited to our advertisers), but also to make good purchasing decisions.
NEW: Structured Decision Process
Purchasing involves a lot of responsibility. We recommend that you apply best practice by using the following structured process: Go through the following expandable sections, complete the form and finally come to a purchase decision. You can then print that to a PDF for documenting the process.
Our article on best practices for purchasing and another one explaining this tool give you valuable insights.
Suppliers for Etalons
31 suppliers for etalons are listed in the RP Photonics Buyer's Guide, out of which 3 present their product descriptions. Both manufacturers and distributors can be registered.
Suppliers with Advertising Package
presenting their product descriptions
![]() 80 Colonnade Rd. North, Unit 1 Nepean, Ontario K2E 7L2 Canada | ![]() LightMachinery manufactures the world's finest solid and air spaced etalons. Our fluid jet polishing systems allow us to routinely create surfaces that are better than λ/100 peak to valley. Solid etalons, air spaced etalons, piezo tunable etalons, Gires–Tournois etalons – LightMachinery has extensive expertise in the manufacturing and testing of all kinds of Fabry–Pérot etalons from 1 mm square to 100 mm in diameter. These devices require high quality, very flat optical surfaces and extreme parallelism to achieve high performance, making them a good match for the polishing and metrology at LightMachinery. Product-specific web page |
![]() Fraunhoferstr. 22 82152 Martinsried Germany See us at LASER World of Photonics 2025 in Munich, June 24–27 (booth B2.203)! | ![]() For highest resolution, our portfolio of high-performance etalons features very high-quality, flat and level surfaces with low roughness and extreme parallelism:
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![]() Lasers, Optics, Electronics. Made in Germany. ALPHALAS GmbHBertha-von-Suttner-Str. 5 37085 Göttingen Germany | ![]() ALPHALAS offers etalons made of fused silica for wavelength tuning and single-frequency operation of lasers. Etalons with diameter 8 mm and thicknesses 0.2 mm, 0.9 mm or 1.3 mm, coated with different reflectivities in the near infrared region, are available from stock. Upgraded to resonant reflectors (stack of very high precision fused quartz flats with spacers and different number of elements), these have very high periodic spectral selectivity and very high damage threshold. Customer-specific designs are also available. Product-specific web page |
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Other Suppliers
AC Photonics United States |
Accusy Photontech, Ltd. China |
Advanced Thin Films United States |
BMV Optical Technologies Inc. Canada |
CASIX Inc. China |
Crylight Photonics, Inc. China |
Crystran Limited United Kingdom |
CVI Laser Optics United States |
Doric Lenses Inc. Canada |
Hellma GmbH Germany |
Holo-Spectra, Inc. United States |
Iridian Spectral Technologies Canada |
Laser Components GmbH Germany |
Laser Sources Ltd. United Kingdom |
Lasertec Inc. China |
Layertec GmbH Germany |
Manx Precision Optics Isle of Man, IM9 2AP |
neoplas control GmbH Germany |
NETWORK GROUP, s.r.o. Czech Republic |
New Age Instruments & Materials India |
Optical Surfaces United Kingdom |
Rising Electro-Optics Ltd. China |
Hangzhou Shalom Electro-optics Technology Co., Ltd. China |
Sinoceramics (USA), LLC United States |
SLS Optics Ltd. United Kingdom |
Taylor Hobson United Kingdom |
TecOptics United States |
VM-TIM GmbH Germany |