Brillouin scattering device

Abstract

The invention provides a Brillouin scattering device, which comprises a parabolic reflector, a stimulated Brillouin scattering medium container and a laser emitter, and is characterized in that a through hole used for allowing the laser to pass is arranged in the center part of the parabolic reflector, a laser beam incident from the through hole sequentially passes through a first focus and a second focus of the parabolic reflector, the stimulated Brillouin scattering medium container is a ball-shaped light transmission container, in addition, the ball center of the ball shape is positioned on the second focus, the laser emitter can rotate, in addition, in the rotation process of the laser emitter, the laser emitted by the laser emitter always firstly passes through the first focus and is then emitted onto the parabolic reflector, and the laser beam incident from the through hole is interfered with the laser beam emitted from the laser emitter.

Description

technical field [0001] The invention relates to stimulated Brillouin scattering, in particular to a container for liquid or gas stimulated Brillouin scattering, which belongs to the field of optoelectronic technology. Background technique [0002] The stimulated Brillouin scattering devices in the prior art are generally divided into two types, one is that the signal light and the pump light are in the same optical path, and the other is that the signal light and the pump light have a cross angle. Stimulated Brillouin scattering has different containers for containing corresponding liquids or gases. For stimulated Brillouin scattering with the same optical path, the corresponding containers are generally transparent cylinders or regular rectangles or squares , when performing stimulated Brillouin scattering experiments, it is only necessary to sequentially inject the laser for generating signal light and the laser for amplification in the same optical path, and there is stim...

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Problems solved by technology

[0002] The stimulated Brillouin scattering devices in the prior art are generally divided into two types, one is that the signal light and the pump light are in the same optical path, and the other is that the signal light and the pump light have a cross angle. Stimulated Brillouin scattering has different containers for containing corresponding liquids or gases. For stimulated Brillouin scattering with the same optical path, the corresponding containers are generally transparent cylinders or regular rectangles or squares , when performing stimulated Brillouin scattering experiments, it is only necessary to sequentially inject the laser for generating signal light and the laser for amplification in the same optical path, and there is stimulated Brillouin scattering with an included angle between signal light and pump light For example, Harbin Institute of Technology invented some corresponding containers, but there is a defect in these containers. In order to reduce the loss caused by reflected light, it is necessary to keep the incident angle of the laser beam at 90 degrees, so for a certain medium pool , the angle between the two laser beams is fixed, because the two incident surfaces of the container itself for the incident two laser beams are fixed, so such a container can only complete the experimental process with a fixed angle, if the experimental process It is basically impossible to change the angle between the two laser beams, but in many cases we need to change the angle between the two laser beams, and in essence, the same optical path only has an angle A special case of , that is, the included angle is zero degrees. In view of the above situation, it is necessary to prepare containers with different angles, not to mention the high cost, and it will take up a lot of space in storage and use. For a limited test bench , it is often necessary to save as much space as possible

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