Fringe counting system for control of a Fabry-Perot spectrometer

Details Fringe counting system for control of a Fabry-Perot spectrometer Fringe counting system for control of a Fabry-Perot spectrometer

Sep 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990opten..29.1143f&link_type=abstract

Optical Engineering (ISSN 0091-3286), vol. 29, Sept. 1990, p. 1143-1150. Research supported by the U.S. Navy, USAF, and SDIO.

Astronomy and Astrophysics

Astronomy

Astronomical Spectroscopy, Fabry-Perot Spectrometers, Infrared Spectroscopy, Optical Measurement, Position Sensing, Servocontrol, Cryogenic Equipment, Digital To Analog Converters, Electromagnetism, Etalons, Fringe Multiplication, Photodiodes

Scientific paper

Optical measurement and control techniques are developed that allow stable, precise adjustment and tracking of Fabry-Perot plate parallelism and spacing over a distance of many fringes with a precision of 20 nm. This extension of the range of optical position sensing has proved useful in controlling a cryogenic, electromagnetically driven, infrared spectrometer for astronomy.

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