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Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE

Single-beam phase conjugation for lasers phase locking and image formation

Nickolai V. Kukhtarev, Tatiana V. Kukhtareva, Michael J. Curley, Gregory Stargell, Sergey S. Sarkisov

Published Aug 28, 2008• 1 citation

Abstract

Single-beam phase conjugation (self-phase conjugation, or SPC) was observed in the ferroelectric crystal LiNbO3:Fe using CW HeNe laser (wavelength 632 nm power 10-36 mW). Effective "out/in" reflection coefficient of phase conjugation (defined as the ratio the output phase-conjugated beam to the input laser beam measured before optical elements) was about 30%. For some crystals efficient phase conjugation was followed by the simultaneous generation of Fabry-Perot modes. Phase locking of two HeNe lasers and imaging of the amplitude objects with the help of self-phase conjugation was demonstrated. Appearances of additional beams (in transmission and reflection) have some analogy with the predicted behavior of the "negative-index materials".

DOI: 10.1117/12.801264

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