Polarization phase-shifting Fizeau interferometer with a cyclic path optical configuration

Sanjib Chatterjee; Y. Pavan Kumar

doi:10.1117/1.3264956

1 November 2009 Polarization phase-shifting Fizeau interferometer with a cyclic path optical configuration

Sanjib Chatterjee, Y. Pavan Kumar

Author Affiliations +

Optical Engineering, Vol. 48, Issue 11, 115601 (November 2009). https://doi.org/10.1117/1.3264956

Abstract

A new technique, using a cyclic path optical configuration, for generating two coherent, virtual point sources at the back focal plane of a corrected telescope objective, for producing a pair of mutually tilted collimated beams with linear orthogonal polarizations in a Fizeau interferometer cavity is presented. The orthogonal linear polarization components reflected from the reference and the test surfaces are utilized for introducing polarization phase shift between the reference and test waves. A method for elimination of the residual instrumental aberration due to a slight departure from strict on-axis operation is discussed. The result for a plane optical surface is presented. Because, in polarization phase shifting, it is possible to capture all the necessary phase-shifted interferograms simultaneously, the vibration susceptibility can be minimized and the present system could be applied for dynamic interferometry.

©(2009) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Sanjib Chatterjee and Y. Pavan Kumar "Polarization phase-shifting Fizeau interferometer with a cyclic path optical configuration," Optical Engineering 48(11), 115601 (1 November 2009). https://doi.org/10.1117/1.3264956

Published: 1 November 2009

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