Buying Etalons

See us at SPIE Photonics West 2025 in San Francisco, January 25–30 (booth 4141)!

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.

For highest resolution, our portfolio of high-performance etalons features very high-quality, flat and level surfaces with low roughness and extreme parallelism:

• solid etalons made from a wide variety of materials such as fused silica, germanium, silicon, zinc selenide, or YAG
• broadband metallic coated solid fused silica metalons can make a difference for wavelength monitoring
• fixed or tunable air spaced etalons
• VIPA etalons (Virtually Imaged Phase Arrays)
• customized etalons that exactly meet your specific requirements

Lasers, Optics, Electronics. Made in 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.