High-precision wide-dynamic-range WCE wavefront sensor

Details High-precision wide-dynamic-range WCE wavefront sensor High-precision wide-dynamic-range WCE wavefront sensor

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992spie.1543..449h&link_type=abstract

Proc. SPIE Vol. 1543, p. 449-459, Active and Adaptive Optical Components, Mark A. Ealey; Ed.

Computer Science

Scientific paper

A temporal carrier frequency shearing interferometer was designed and fabricated for Kaman Aerospace to support the Space Shuttle based Wavefront Control Experiment (WCE). This platform and the intended experiments placed many constraints (weight, size, power, sensitivity, etc.) on the sensor design process. The sensor resulting from this design meets all requirements by using a rotating crossed log spiral grating and PMT detectors to achieve both a large tilt range and high precision. A measurement dynamic range of 1340:1 is obtained at 3875 wavefronts per second and the sensor is shot noise limited over 5 decades of signal.

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