Infrared High-Speed Fabry-Perot Interferometer For Rapid-Scan Laser Spectroscopy Measurements

R. N. Shagam

doi:10.1117/12.948305

7 December 1988 Infrared High-Speed Fabry-Perot Interferometer For Rapid-Scan Laser Spectroscopy Measurements

R. N. Shagam

Proceedings Volume 0972, Infrared Technology XIV; (1988) https://doi.org/10.1117/12.948305
Event: 32nd Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1988, San Diego, CA, United States

Abstract

A high-speed scanning Fabry-Perot interferometer (FPI) has been developed to provide time-resolved spectral data on a pulsed iodine laser operating at 1.3152 Am. The instrument consists of a Fabry-Perot etalon operating in the bull's-eye (Haidinger) fringe mode, combined with transfer optics and a polygon scan mirror for streaking a slit image containing the Fabry-Perot spectrum onto a lead sulfide vidicon camera. The FPI is adjusted for a free spectral range of 0.250 nm in order to detect any or all of the six possible iodine transitions. Spectra with pulse lengths as long as 50 μs can be measured to a resolution better than 500 ns. The instrument is coupled to a personal computer based video frame grabber for data acquisition and analysis.

Citation Download Citation

R. N. Shagam "Infrared High-Speed Fabry-Perot Interferometer For Rapid-Scan Laser Spectroscopy Measurements", Proc. SPIE 0972, Infrared Technology XIV, (7 December 1988); https://doi.org/10.1117/12.948305

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KEYWORDS

Fabry–Perot interferometers

Mirrors

Scanners

Infrared technology

Lead

Eye

Polygon scanners

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