Device for fast and low-loss replacement of laser output mirror

Abstract

The invention discloses a device for fast and low-loss replacement of a laser output mirror, relating to the field of high-power gas laser devices. The device comprises a cavity valve, an output mirror mounting flexible pipe seat, a first pipeline, a second pipeline and a pressure sensor, wherein the cavity valve is hermetically mounted on a working cavity of the laser device, the aperture of a channel of the cavity valve is not less than the clear aperture on the working cavity of the laser device, and a channel hole and a light through hole are coaxially mounted; a flange at one end of the output mirror mounting flexible pipe seat is hermetically and coaxially mounted on the cavity valve, and a flange at the other end is hermetically connected with the laser output mirror through a lens gland bush of the laser device; holes communicated with the outside are formed in the flanges of the output mirror mounting flexible pipe seat, and the first pipeline, the second pipeline and the pressure sensor are respectively hermetically connected with the holes formed in the flanges of the output mirror mounting flexible pipe seat; and pipe valves are respectively mounted on the first pipeline and the second pipeline. The device disclosed by the invention can greatly shorten the replacement time of the laser output mirror and realize very small waste of working gas of the laser device.

Description

technical field [0001] The invention relates to the field of high-power gas lasers, in particular to a device capable of quickly and low-loss replacement of the output mirror of the gas laser with an average power of more than several thousand watts. Background technique [0002] High-power gas lasers need a closed working chamber, which is used as a container for working gas, and its volume is generally more than several cubic meters. High-power gas lasers mostly use a "flat-concave" optically stable cavity, which is composed of two mirrors, one of which is a concave spherical total reflection mirror made of metal, and the other is a flat partial mirror made of optical glass—that is, Laser output mirror. In the existing laser structure, these two lenses are also the sealing parts of the sealed working chamber of the laser. There are generally two installation methods: one is directly installed on the wall of the laser working chamber, and the other is through a metal hose ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems in the prior art that the high-power gas laser will communicate with the atmosphere every time the output mirror is replaced, the working gas is wasted, and the replacement time is long. Laser output mirror replacement device with minimal waste

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