Phase-difference variance measurements of a coherent amplitude interferometer at low light levels

Details Phase-difference variance measurements of a coherent amplitude interferometer at low light levels Phase-difference variance measurements of a coherent amplitude interferometer at low light levels

Nov 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993spie.2029..150r&link_type=abstract

Proc. SPIE Vol. 2029, p. 150-160, Digital Image Recovery and Synthesis II, Paul S. Idell; Ed.

Physics

Scientific paper

The ability to accurately measure the phase of the wavefront in an amplitude interferometer is fundamentally limited by the light level. Under high light conditions, the variance of the phase measurement is inversely proportional to the number of photons detected. In this paper, we review the basic theory of phase measurement for an optical heterodyne array imaging system for high light conditions. The theory is then extended to a sheared coherent interferometric photography (SCIP) system. Simulation and laboratory results verifying the theory and extending it to low light levels are then presented.

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