Phase Conjugation Of Laser Radiation Research Articles

Optimisation of phase conjugation by SBS in a capillary

Phase conjugation of laser radiation is studied by SBS in a capillary filled with TiCl4. A combination of a relatively low SBS threshold for spatially inhomogeneous radiation, a high quality of phase conjugation, and a wide dynamic range of the phase conjugated radiation energy was obtained. PBr3 is proposed and investigated as a nonlinear optical medium for further decreasing the SBS threshold.

The Use of Brillouin Enhanced Four Wave Mixing for Phase Conjugation of Laser Radiation.

Possibility of phase conjugation (PC) of solid-state laser radiation via Brillouin Enhanced Four-Wave Mixing (BEFWM) has been shown experimentally. Correction of various types of optical aberration introduced into incoming signal has been observed. PC-fidelity has been estimated to be equal to 0.62. Principle of operation of a multifunctional telescope system using BEFWM effect for correction for priary mirror aberration is briefly described.

Formation of dynamic diffraction gratings and phase conjugation under conditions of optocapillary profiling of thin liquid layers

Dynamic diffraction gratings were formed and phase conjugation of laser radiation was achieved experimentally using a nonlinear optical medium in the form of a thin liquid layer with its surface profile modulated by the optically induced Marangoni effect. The characteristic relaxation time of such a grating, the diffraction efficiency, and the reflection coefficient under the phase conjugation conditions were determined. The experiments were interpreted by a calculation of the amplitudes of modulation of the surface profile of the liquid layer and of the diffraction efficiency of the grating.

Influence of thermal self-interaction on phase conjugation of laser radiation by stimulated Brillouin scattering in liquids at high values of the excess above the power threshold

The influence of thermal self-interaction on phase conjugation of laser radiation by stimulated Brillouin scattering was investigated experimentally under conditions of a large excess of the power above the threshold. In this case it was possible to achieve phase conjugation of radiation with an energy considerably higher than the critical energy of thermal self-interaction.