Device for beam combination and alignment of multi-band laser

Abstract

The invention discloses a device for beam combination and alignment of a multi-band laser and relates to the technical field of laser beam combination and alignment. The device comprises a first laser device (1), a first lens (2), a first two-dimensional tilting mirror (3), a second laser device (4), a second lens (5), a second two-dimensional tilting mirror (6), a third laser device (7), a third lens (8), a third two-dimensional tilting mirror (9), a beam splitter (10), a focusing secondary mirror (11), a focusing primary mirror (12), a hot target (13) and a two-dimensional tilting mirror closed-loop control circuit; the two-dimensional tilting mirror closed-loop control circuit comprises an infrared camera (14) and a controller (15), and the focusing secondary mirror (11) and the focusing primary mirror (12) form a focus lens group together. The device has the beneficial effects that the device can achieve beam combination and alignment of lasers of different bands by carrying out position detection just by a detector, and meanwhile, the beam combination and alignment accuracy of the laser is also 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 multi-band laser beam combining and alignment. 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 detectors need to be accurately ...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the existing laser beam combining alignment technology must use multiple detectors for position detection when combining and aligning multi-band lasers to achieve beam combining and alignment for multi-band lasers, each laser beam requires a separate detector For position detection, the reference positions of multiple detectors need to be accurately compared and calibrated, and the laser beam combining accuracy is limited. Not only the number of detectors is large, the manufacturing cost is high, and the layout space is large, but also because the detectors directly monitor the emission There are technical problems such as the risk of being destroyed by the laser, and the present invention provides a device for combining and aligning multi-band laser beams

Images