Amnon Yariv and David M. Pepper analyzed phase conjugation through degenerate four-wave mixing. The nonlinear interaction generates a returning light field with the opposite spatial wave phase variation. Under appropriate propagation conditions, this lets the returning wavefront retrace distortions of the incident field. Their 1977 paper treats amplified reflection and a related mode of parametric oscillation, connecting a nonlinear material response with both wavefront control and optical amplification.[ref]
Amplified reflection, phase conjugation, and oscillation in degenerate four-wave mixing by Amnon Yariv and David M. Pepper. Abstract: amplified phase-conjugated propagation and parametric oscillation
Portrait of Amnon Yariv
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Amnon Yariv is a prominent physicist known for his contributions to the field of optics, particularly in areas such as laser physics and photonics. He has played a significant role in advancing the understanding of laser technology and its applications. Yariv is also recognized for his work in the development of integrated optics and optoelectronics. In addition to his research, Amnon Yariv has been involved in academia as a professor and has published numerous papers and textbooks in his field.