Research Of Variable Curvature Mirror With Single Actuator

In order to resolve the output beam of high energy laser beam quality due to thermal lensing effect transformation problems arising over time, studied the structure of an active optical components, use only one drive change in curvature of the mirror can be controlled, or compensation in high energy laser gain media resulting from thermal effects of spherical aberration optical components. Through theoretical calculations and finite element analysis method for numerical analysis of the structure, in accordance with the establishment of three dimensional model real-world mechanical structure for different parameters of optical elements and mechanical structures for finite element analysis and theoretical calculation of finite element analysis with the results for comparison. In accordance with the model parameters experimental equipment for processing and manufacturing, using Interferometer experimental apparatus to measure the deformation under different force, finite element analysis of measurement data and the results compared. Through calculation, finite element analysis and experimental study on verification, three results are very good anastomosis, by experiments prove the structure to make mirror micro-deformation, by precisely controlling the drive, can make mirrors of curvature required changes. Inferred by using the theory of optical structure using compensating thermal lens effect caused by the output beam of spherical aberration compensation formula, results show that this active optical element can be used for high energy laser resonant cavity compensation of thermal effect in spherical aberration effects.