Mechanical optical shutter device for laser

Abstract

The invention relates to a mechanical optical shutter device for a laser, and a pulse scanning mechanism of the device comprises a rotating disc fixing support which is provided with an upper rotating disc and a lower rotating disc. The upper and lower rotating discs are respectively provided with a plurality of through holes, and are respectively connected with a transmission shaft of a servo motor through rotating disc central holes. The servo motor is disposed on the rotating disc fixing support. A pulse adjustment mechanism comprises a plurality of reflectors disposed on a side surface of the upper rotating disc, a plurality of reflectors disposed on a side surface of the lower rotating disc, a semiconductor laser, and a rotating disc photoelectric detection apparatus, wherein the semiconductor laser is disposed on a semiconductor laser support. The semiconductor laser support is connected with a supporting seat, and the supporting seat is fixed on a pedestal. The bottom of the rotating disc photoelectric detection apparatus is fixed on the rotating disc fixing support. A light-outgoing mechanism comprises a reflector mechanism and a reflector photoelectric detection apparatus. The device effectively solves a technical problem that a current optical shutter is difficult to achieve the machining of single laser pulse or low pulse, is high in stability, and is quick in response.

Description

technical field [0001] The invention relates to a laser mechanical shutter device, which belongs to the technical field of laser processing equipment. Background technique [0002] The mechanical shutter is a device that quickly controls the closing and emitting of the laser light emitted from the resonator during laser processing. In general laser processing, the on-off frequency requirement of the optical shutter is not very high, but in some special fields such as laser single-pulse processing, when the laser pulse frequency needs to be reduced, the existing mechanical optical shutter is difficult to meet this requirement. [0003] The existing mechanical light gates mainly include cylinders, linear electromagnets, relays, solenoid valves, stepping motors, etc., which reduce the response speed of the light gates. However, in recent years, the research and application of the Q switch can make it used as an optical gate in the external optical path, and it has a high respo...

AI Technical Summary

Problems solved by technology

However, the research and application of the Q switch in recent years can make it used as an optical gate in the external optical path, and it has a high response speed, but the Q switch will change the mode of the laser, and it may not be possible to turn off all laser beams for high-power lasers. The laser generated, and the Q switch is expensive and cannot be widely used

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