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Photonics Spectra
Jul 2004
Precision SolutionsRequest Info
Precision-Optical Engineering has announced an interferometer that comes with a choice of lasers either operating at 10.6 µm and tunable over the 9.2- to 10.7-µm range, or operating from 3 to 5 µm. The Interfire-II performs routine quality monitoring tests for optical components and systems in the IR and can be used in production, quality control and research. The 3- to-5-µm version is mounted on an invar frame for improved stability, tolerates local temperature changes and has a fast warm-up time. The 10.6-µm model is available with water-cooled lasers for good stability. The systems use a focal plane array camera for increased sensitivity and reduced noise. The electronic system is processor-controlled, enabling the use of a remote laptop for motor-controlled functions.


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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...
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