Mutual phase conjugation of diffusely reflected light for real-time interferometry

Mingjun M. Zhao; Tin M. Aye; Helen H. Chen; Gajendra D. Savant

doi:10.1117/12.293395

21 November 1997 Mutual phase conjugation of diffusely reflected light for real-time interferometry

Mingjun M. Zhao, Tin M. Aye, Helen H. Chen, Gajendra D. Savant

Proceedings Volume 3172, Optical Technology in Fluid, Thermal, and Combustion Flow III; (1997) https://doi.org/10.1117/12.293395
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

A mutually pumped phase conjugator generates a phase- conjugate replica for each of two mutually incoherent incident optical beams interacting within a photorefractive crystal. This operation is useful for optical communication and interferometry. In this paper, we report a demonstration of mutual phase conjugation for light reflected from a diffuse surface. We studied the dependence of the phase- conjugation reflectivity on the parameters of the optical system. Finally, we built a mutually phase conjugating interferometer to detect the ultrasound vibration of a diffuse object to inspect defects inside it, based on laser generated ultrasound technology. The experimental results and analysis will be given.

Citation Download Citation

Mingjun M. Zhao, Tin M. Aye, Helen H. Chen, and Gajendra D. Savant "Mutual phase conjugation of diffusely reflected light for real-time interferometry", Proc. SPIE 3172, Optical Technology in Fluid, Thermal, and Combustion Flow III, (21 November 1997); https://doi.org/10.1117/12.293395

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