Phase Conjugate Interferometry

W. H. Chen; P. J. Wang; P. C. San; P. Yeh

doi:10.1117/12.939710

22 April 1988 Phase Conjugate Interferometry

W. H. Chen, P. J. Wang, P. C. San, P. Yeh

Proceedings Volume 0739, Phase Conjugation, Beam Combining, and Diagnostics; (1988) https://doi.org/10.1117/12.939710
Event: OE LASE'87 and EO Imaging Symposium, 1987, Los Angeles, CA, United States

Abstract

A Michelson Interferometer using two photorefractive BaTiO₃ crystals was studied in which one BaTiO3 was used to generate a self-pumped phase-conjugate wave. This conjugate wave forms theone arm of the interferometer and was also used as one of the pumping beams to pump the other BaTiO₃ crystal which generated the other phase-conjugate wave through four-wave mixing. The output from the two arms are therefore both phase-conjugate waves. The interference pattern shows excellent spatial intensity distribution and is insensitive to the reciprocal noises and optical path length. Absolute phase of the phase conjugator was also measured which is a function of the crystal orientation and can be used to bias the interferometer by simply rotating the crystal to obtain an operating point of highest sensitivity and linear response.

Citation Download Citation

W. H. Chen, P. J. Wang, P. C. San, and P. Yeh "Phase Conjugate Interferometry", Proc. SPIE 0739, Phase Conjugation, Beam Combining, and Diagnostics, (22 April 1988); https://doi.org/10.1117/12.939710

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