A light beam position adjustment device

Abstract

The invention discloses a light beam position adjustment device, comprising: a base, a first plane reflector, a second plane reflector, a third plane reflector, a fourth plane reflector and one of the four plane reflectors driven along the A moving mechanism that moves in the X-axis direction; the reflective surface of the second plane reflector is opposite to the reflective surface of the third plane reflector, and the reflective surface of the first plane reflector is parallel and relatively arranged on the reflective surface of the second plane reflector In the upper part, the reflective surface of the fourth plane reflector is parallel to and opposite to the upper part of the reflective surface of the third plane reflector. The beam position adjustment device provided by the present invention can adjust the exit position of the beam without changing the beam direction, avoiding the difficult problem of coupling position adjustment and pointing adjustment; in addition, the beam position adjustment device in the present invention is compact in structure and directly It can be used after being inserted into the optical path, without changing the original beam structure and layout, which is convenient and easy.

Description

technical field [0001] The invention relates to the technical field of laser wavelength beam combining, and more specifically, to a beam position adjustment device. Background technique [0002] In the field of laser wavelength combining, the pros and cons of multi-channel laser beam combining are generally evaluated by two indicators: pointing deviation and position deviation. Pointing deviation refers to the angle difference between the laser propagation direction and the reference direction, which reflects the non-parallel degree of the laser and the reference; position deviation refers to the position difference between the laser and the reference center on a certain section, which reflects the laser The degree of misalignment between the position and the reference position. If there is a large pointing deviation between the two laser beams, their position misalignment will increase with the increase of the laser action distance. But if the two laser beams are strictly...

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Problems solved by technology

[0003] In the prior art, electric devices for beam pointing adjustment, such as two-dimensional swing mirrors and fast mirrors, are relatively common, and in some applications that require high beam combining accuracy, the correction requirements for beam combining laser position deviations are also the same. It is extremely high, but the special position deviation adjustment device is very rare, especially the electric device used to adjust the position deviation adjustment of the high and low direction of the combined beam without greatly changing the center height of the optical path; some occasions use two-dimensional pendulum mirror to realize the adjustment of the position deviation of the beam, but another set of two-dimensional swing mirror must be added at the rear end to perform secondary compensation for the change of the beam pointing. Complicated, which increases the burden on the control unit; in addition, the adjustment amount of the position deviation is directly determined by the optical distance between the two sets of swing mirrors when the stroke of the swing mirror is fixed. Therefore, this method is not suitable for strictly limited space arrangement. Occasion application

[0004] In addition, in the prior art, there is also a method of accurately adjusting the positions of the light guide mirror and the beam combining mirror in the installation and adjustment stage to achieve accurate correction of the position deviation of the multi-channel lasers; And this method does not have the adjustment link of position deviation, and it cannot automatically compensate the position deviation caused by changes in temperature and stress.

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