Effects of wave fields decoherence in Linnik equal-arm interferometer
Daria M. Klychkova, 1 Vladimir P. Ryabukho, 1,2 1 Saratov State University, Saratov, Russia 2 Institute of Precision Mechanics and Control RAS, Saratov, Russia
Abstract
The work is devoted to the study of the influence of the temporal and angular spectra width of the illumination field on the interference pattern contrast dependence on the longitudinal displacement value of the microobjective in the equal-arm Linnik interferometer. An analytical expression is obtained that describes the interference pattern contrast dependence on the longitudinal displacement value of the microobjective for various temporal and angular spectra widths. It is shown that with an increase in the longitudinal displacement of one of the microobjectives from the focus position, a decrease in the interference pattern contrast is observed, which is a manifestation of the longitudinal spatial coherence of the reference and object fields
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Daria M. Klychkova
Saratov State University
Russia
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