Abstract

In order to satisfy the requirement of space optical communication system,and ensure relative stabilization of beaconing laser spot energy detected by photoelectric detector,an device for dynamic stabilizing laser energy is developed and dynamic light-adjusting technology of high frame frequency CCD camera based on liquid crystal is investigated.Compared with mechanical and electronic shutter,it proves the feasibility of dynamic light-adjusting technology based on liquid crystal.Then combined with the characteristic of space optical communication system,it is discussed the dynamic light-adjusting principle of high frame frequency CCD camera based on liquid crystal in detail.Finally,it presents the principle block diagram of the device,data and result of experiment.Experimental results indicate that the dynamic light-adjusting technology based on liquid crystal spatial light attenuator can achieve energy autocontrol of beaconing laser without moving optics,thereby ensuring relative stabilization of laser spot energy detected by photoelectric detector.It proves the feasibility of dynamic light-adjusting technology based on liquid crystal,at the same time it is pointed that liquid crystal as a new type dynamic optics module with flexible adjusting have wider application foreground in space optical communication system.

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