Turbulent flow simulation device based on light addressing liquid crystal space light modulator

Abstract

The invention provides a turbulent flow simulation device based on a light addressing liquid crystal space light modulator. The device comprises write-in light and read-out light, wherein a polaroid, a TFT (Thin Film Transistor) liquid crystal screen, a thin lens, a light addressing liquid crystal space light modulator and a light splitter are sequentially arranged along the direction of the write-in light, the read-out light is incident from the light splitter, and a 45 DEG angle is formed between the light splitter and the read-out light beam. A computer is connected with the TFT liquid crystal screen through a drive module, and the phase variation of the TFT liquid crystal screen is controlled and driven by the computer so as to modulate the write-in light. The device disclosed by the invention overcomes the defects, such as limited resolution, low aperture rate and the like of common electric addressing liquid crystal turbulent flow simulation devices, and has the characteristics of continuous distribution of the refraction ratio of real turbulent flow, and the like.

Description

technical field [0001] The invention belongs to the field of atmospheric optics and adaptive optics, and relates to a turbulence simulation device based on an optical addressing liquid crystal spatial light modulator, which can be used for experimental simulation research of laser transmission characteristics in turbulent media such as atmosphere or liquid. Background technique [0002] With the continuous development of atmospheric optics, optical communication and other technologies, the optical effects caused by atmospheric turbulence on optical transmission have attracted more and more attention. When the laser is transmitted in the atmosphere, the random phase fluctuation caused by the atmospheric turbulence has caused great disturbance to the transmission of light, which greatly affects the overall operating characteristics of the optoelectronic system. Therefore, it is necessary to carry out targeted research to further analyze the influence factors of atmospheric tur...

AI Technical Summary

Problems solved by technology

Electrical addressing transmits information through strip electrodes. There is a limit to the reduction of the electrode size, so the pixel size is also limited, that is, there is a resolution limit, and because the electrode itself is opaque, the effective light-transmitting area of ​​the pixel is the same as the total pixel size. The ratio of the area, i.e. the opening ratio, is low, which also has a certain influence on the actual results

Images