Device used for realizing beam-combination alignment for lasers at different wave bands and different wave lengths

Abstract

The invention discloses a device used for realizing the beam-combination alignment for lasers at different wave bands and different wave lengths, belonging to the technical field of the beam-combination alignment of the lasers. The device comprises a first laser (1), a first lens (2), a first two-dimensional oscillating mirror (3), a second laser (4), a second lens (5), a second two-dimensional oscillating mirror (6), a third laser (7), a third lens (8), a third two-dimensional oscillating mirror (9), a beam splitter (10) and a two-dimensional oscillating mirror closed control loop, wherein the two-dimensional oscillating mirror closed control loop comprises a camera (11) and a controller (12). The device has the beneficial effects that the device can realize the beam-combination alignment for the lasers at different wave bands and different wave lengths through the position detection of only one detector, meanwhile, the precision of the beam-combination alignment for the lasers can be greatly improved.

Description

technical field [0001] The invention relates to the technical field of laser beam combining and alignment, in particular to a device for combining and aligning laser beams of different wavelengths in the same band. Background technique [0002] The laser beam combining and alignment technology is a key technology used to realize coaxial alignment of interference lasers in the field of photoelectric countermeasures. The document "Chinese Invention Patent with Publication No. standard device. The invention adopts three four-quadrant detectors to monitor the positions of the emitted lasers of the three lasers, and then provides feedback information for the fast mirror to realize the precise alignment and coaxiality of the three outgoing lasers. The device is simple in principle and easy to implement, but each laser beam requires a separate detector for position detection, which has high manufacturing costs and takes up a lot of space, and the reference positions of the three d...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of combining and aligning multiple laser beams with different wavelengths in the same wavelength range in the existing laser beam combining and aligning technology, each laser beam needs a separate detector for position detection, and the reference positions of multiple detectors need to be accurate. Due to the technical problems of the comparative calibration and the limited accuracy of laser beam combining and alignment, the present invention provides a device for beam combining and aligning laser beams of different wavelengths in the same band

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