Planar waveguide laser gain medium configuration for inhibiting ASEPO

Abstract

The invention provides a planar waveguide laser gain medium configuration for inhibiting ASEPO. According to the scheme, the planar waveguide laser gain medium configuration comprises a core layer, inner claddings, outer claddings and end face film layers; the core layer is a doped region, and the inner claddings and the outer claddings are non-doped regions; the inner claddings are arranged in parallel outside the core layer; the outer claddings are arranged in parallel outside the inner claddings; the inner claddings and the core layer constitute a waveguide structure; laser emission end face films are arranged at both ends of the waveguide structure and completely cover the inner claddings, the outer claddings and the core layer; and the normal of one end face of a waveguide is in parallel to the core layer, and a specific angle is formed between the normal of the other end face of the waveguide and the core layer. According to the scheme, the double-cladding planar waveguide of which the end faces are subjected to corner cutting is adopted, so that the ASE / PO in the planar waveguide can be inhibited, and the planar waveguide laser gain medium configuration is easy to implement high-efficiency high-power laser output.

Description

technical field [0001] The invention relates to the field of solid laser technology, in particular to a planar waveguide laser gain medium configuration for suppressing ASE / PO. Background technique [0002] All-solid-state lasers have many advantages such as high efficiency, compact structure, stable performance, and good output beam quality, and are widely used in industry, military, medical and scientific research. Especially in military and industrial processing, high-power all-solid-state lasers have good application prospects. The gain medium of early all-solid-state lasers usually chooses a round rod or a block structure, but there are serious thermal lens effects and birefringence effects under high-power pumping, which causes strong optical distortion in the gain medium and limits high-efficiency lasers. power output power. In order to increase the heat dissipation surface area and obtain high-power laser output, people have made many attempts and innovations in th...

AI Technical Summary

Problems solved by technology

Slab waveguide laser combines the advantages of bulk solid-state laser and fiber laser, while avoiding the disadvantages of both: fiber laser has the advantages of compact structure, high efficiency, and less degradation of beam quality caused by waste heat. The disadvantage is that due to the extremely high laser brightness, it is very The linear effect directly limits the maximum output power; when the bulk solid-state laser is scaled and enlarged, there is basically no nonlinear effect problem. The disadvantage is that the beam quality degradation caused by waste heat is serious, and the structure is difficult to achieve small and compact

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