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Infrared Interferometers
Mar 2008
Graham Optical SystemsRequest Info
CHATSWORTH, Calif., March 25, 2008 -- Graham Optical Systems said its new line of 4-in.- and 6-in.-aperture infrared interferometers are affordable and include the 4-in. model 339ir, a phase-shifting Fizeau operating at 3.39 µm.
Graham Optical's 4-in. model 339ir, a phase-shifting Fizeau operating at 3.39 µm.
The 339ir uses a helium-neon laser operating at a wavelength of 3.39-µm to produce a high contrast, speckle-free image. It is also available in a 6-in. version.

Other models are available at 1.06 µm or 1.55 µm, the company said, and all models are offered in dual-wavelength versions which permit switching from infrared to visible wavelength (632.8 nm). Both infrared and visible beams are coaxial, greatly simplifying alignment of the test piece, and custom versions are available.

With a small footprint and solid construction, the interferometers exhibit the highest contrast fringes available with excellent repeatability and reproducibility, Graham Optical said. The turnkey instruments are provided with computer and phase software.

For more information, visit:; e-mail:

Graham Optical Systems
9530 Topanga Canyon Blvd.,
Chatsworth, CA 91311
Phone: (818) 700-1263
Fax: (818) 700-1627


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An opening or hole through which radiation or matter may pass.
An instrument that employs the interference of lightwaves to measure the accuracy of optical surfaces; it can measure a length in terms of the length of a wave of light by using interference phenomena based on the wave characteristics of light. Interferometers are used extensively for testing optical elements during manufacture. Typical designs include the Michelson, Twyman-Green and Fizeau interferometers. The basic interferometer components are a light source, a beamsplitter, a reference...
The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
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