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4-inch Aperture Fizeau Interferometer Operates at 3392 nm and 635 nm |
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4-inch Aperture Fizeau Interferometer Operates at 3392 nm and 635 nm |
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HOME Other
Dual Wavelength
Grazing
Incidence
Advantages
of Dual
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 The
4-inch aperture Model 339irVIS interferometer operates in two modes:
Infrared or Visible -- selectable with a switch. The instrument features
a Zinc Selenide collimator and reference surface which is flat to 1/20
wave (measured at 632.8 nM). Two separate sources are employed -- a Helium-Neon
Laser operating at 3392 nm and a single mode diode laser operating
at 635 nm. Both are dithered to produce speckle-free live interferograms
on the computer monitor.
The Model 339irVIS is quipped with two Cameras -- an uncooled broadband camera with a 320 x 240 focal plane array which produces the infrared interferogram, while a standard CCD camera with 768 x 494 resolution is used for the 635 nm mode. This phase-shifting Fizeau interferometer utilizes piezo-electric phase shifters and Durango Universal Interferometry Software to permit the operator to achieve highly accurate and repeatable measurements at both infrared and visible wavelengths. In typical usage of a Dual Wavelength Interferometer, the operator can align his optical system and perform any necessary tip/tilt operations with the interferometer in VISIBLE MODE -- greatly simplifying the procedure. ADVANTAGES OF A DUAL WAVELENGTH INTERFEROMETER While
in the VISIBLE MODE, surface flatness measurements may be made at
the higher accuracy 635 nm wavelength. The interferometer can then be put
into the fully aligned IR MODE with the simple flip of a switch
These interferometers are provided complete with
Durango
Universal
Interferometry Software installed
in a fully configured 2.2 GHz Computer with an Intel Dual Core processor
and includes a 19-inch TFT flat screen monitor..
For
Further Information, call Gordon Graham today at (818) 700-1263 E-Mail:
techinfo@grahamoptical.com
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