Alexey Okulov

In 2014 Dr. Okulov had shown that such binary-tree Michelson phase-conjugator with degenerate four-wave mixing Kerr nonlinear mirror could be used for coherent summation of chirped-pulse fiber laser amplifiers.

Joined Lebedev Physical Institute Moscow in October 1979. Graduated from Moscow Institute of Physics and Technology in 1980, PhD from Lebedev Physical Institute, thesis "Periodicity and Chaos in Structured Light" in 1994.

A.Yu. Okulov made substantial contributions in the optical phase conjugation, angular momentum of light, ultracold atoms theory and chaos theory. In 1979-1980 he made the seminal experiments on coherent summation of laser beams via Optical phase conjugation in stimulated Brillouin scattering. The Michelson interferometer had been used to demonstrate the universal method for robust coherent summation of N {\displaystyle N} laser beams with complex amplitude and phase profile. The nontrivial feature of the Michelson interferometer with stimulated Brillouin scattering mirror is that the interference pattern is insensitive to wavelength-scale phase distortions. This gives the unique opportunity to use a binary tree of N − 1 {\displaystyle N-1} beamsplitters for coherent addition of N = 2 n {\displaystyle N=2^{n}} laser amplifiers. Constructive interference in an array containing N − 1 {\displaystyle N-1} beamsplitters of N {\displaystyle N} laser beams synchronized by phase conjugation may increase the brightness of output amplified beam as N 2 {\displaystyle N^{2}} .