Design and application of fast steering mirror system

With the existence of atmospheric turbulence, laser propagation in atmosphere can lead to light spot tilt and energy convergence decline. Correcting tilt aberration can increase the quality of laser propagation in atmosphere, and fast steering mirror is the key component of tilt aberration correction. A two-dimension PZT driving fast steering mirror with flexible axis structure was designed, which used the high voltage operational amplifier PA96 to make the driving power, and selected the DSP chip of TMS320F2812 version as the core processor of the control system. Indicated by the test of experiments, the range of deflection of the fast steering mirror is 1.8 mrad, the resonant frequency is 432 Hz, and the angle resolution is about 0.5 rad. The mirror system was used in the experiment of correcting tilt aberration in laser propagation in atmosphere .The experiment shows that the system can effectively increase facula energy convergence and reduce facula shift, and it can be applied to correcting tilt aberration in laser propagation in atmosphere.