A semiconductor laser beam expander adjustment device

Abstract

The invention discloses an adjustment device for a semiconductor laser beam expander. The adjustment device is used to adjust the relative distance between a concave lens and a convex lens of the beam expander to achieve the purpose of beam expansion. The adjustment device includes a placement box, two moving blocks and two driving blocks. Two driving devices for a moving block to move back and forth in the placement box, the two moving blocks are used to fix the concave lens or convex lens respectively; the swing device, the adjustment device is arranged on the swing device, and the swing device is used to adjust the optical axis and beam expansion of the laser. The central axis of the mirror coincides, and the swing device is detachably installed at the laser outlet. The swing device includes a support, an iron ball that can rotate in any direction in the support, and a pusher that pushes the iron ball to rotate in any direction on the support; The fixing device is arranged on the supporting member, and the fixing device is used for fixing the rotated iron ball. The invention can adjust the coincidence of the optical axis of the laser output light and the central axis of the beam expander, and can adjust the focus at the same time.

Description

technical field [0001] The invention relates to the technical field of laser adjustment devices, in particular to a semiconductor laser beam expander adjustment device. Background technique [0002] In the field of laser processing, the beam expander is an indispensable lens component to change the diameter and spread angle of the laser beam. The laser beam emitted from the laser has a certain divergence angle. For laser processing, only by adjusting the beam expander to make the laser beam into a collimated beam can the focusing mirror be used to obtain a small high-power-density spot. [0003] When installing and debugging the laser system, the adjustment of the beam expander system directly affects the quality of the beam. The current conventional beam expander adjustment method is to place the designed beam expander adjustment system at a certain distance from the laser exit on the optical platform, and adjust the beam expander central axis to be consistent with the bea...

AI Technical Summary

Problems solved by technology

However, since the beam expander adjustment device is directly fixed at the light exit of the laser, it is necessary to adjust several top screws on the beam expander frame, and the adjustment is difficult, and at the same time, the distance between the concave lens and the convex lens of the beam expander cannot be adjusted, which is insufficient.

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