High repetition frequency high precision rotating disk type mechanical shutter device

Abstract

This invention discloses a rotary disc mechanic shutter of high repeating frequency and accuracy for switch controlling of light signals. A thin light-tight rotary disc with some holes is fixed on the generator spindle nose through clamp nut and axle sleeve. A photoelectric switch that fixed on the socket records the rotation information. A moveable photodiode probe is installed in the back of the disc where signal beams come through. The said mechanical shutter can be applied to some fields such as laser radar, laser ranging, laser space communication and laser satellite in self-adaptive optics.

Description

technical field [0001] The invention relates to a high-repetition-frequency and high-precision turntable mechanical shutter device, which is used for high-repetition-frequency and high-precision switch control of optical signals. Background technique [0002] In the application fields of laser radar, laser ranging, space laser communication, laser artificial guide star in adaptive optics technology, etc., it is necessary to detect targets at a certain distance. Its working system is to launch a laser pulse first, and then use the photodetector to receive the optical signal returned from the target after a certain time delay, and obtain effective information from the returned optical signal. In some applications, the repetition rate of pulsed laser emission and photoelectric reception is very high. For example, in the laser guide star in the adaptive optics technology, the repetition rate can reach hundreds of kilohertz. The time delay is proportional to the target distance...

AI Technical Summary

Problems solved by technology

However, the structure of this mechanical shutter device is relatively complicated. Using this technical means, it is impossible to achieve a repetition rate of thousands of hertz and a time setting accuracy of microseconds at the same time.

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