Method of different medium of mixed medium selected by double-pond excited Brillouin scattering system

Abstract

The invention relates to a method for selecting different medium or mixed medium for double-pod stimulated Brillouin scattering system. Said invention relates to non-linear optical field. The laser outputted from laser can be passed throught the polaroid, 1/4 wave plate, first convex lens, amplifying pool and second convex lens, and outputted into the input end of oscillating pool, then the seed light can be returned along the original way, and inputted on the polaroid and refracted out by it. Said invention also provides a formula for selecting medium varity in the amplifying pool and oscillating pool. Said invention can effectively raise loading capacity of said system, energy conversion efficiency, phase conjugated fidelity and stability.

Description

Technical field: The invention relates to the field of nonlinear optics, in particular to a method for selecting different media or mixed media for a double-cell stimulated Brillouin scattering system. Background technique: Because stimulated Brillouin scattering (SBS) has the characteristic of phase conjugation, it can eliminate the phase distortion in the process of light transmission and improve the beam quality. Therefore, the theory of SBS phase conjugation and its experiments have been widely studied for many years. SBS phase-conjugate mirrors are available in various configurations, such as focusing single-cell, double-cell system, compact double-cell system, and independent double-cell system, etc. Except for the focusing single cell, all other structures belong to the vibration-amplification double cell system, which consists of two parts: the oscillation cell and the amplification cell. The Stokes seed light generated in the oscillation cell enters the amplificat...

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