Bimirror nonplanar ring laser for one-point output multi-point end face pumping

Abstract

One piece of output coupling lens and one piece of laser gain medium form resonant cavity of laser. The coupling lens is a concave spherical mirror; and inner surface of the laser gain medium is a plane, and the outer surface is a convex spherical surface. Anti-reflection film is coated on the plane. Reflective coating, which is total reflection for laser generated from cavity, and high transmissive for LD pumping light, is coated on the convex surface. There are multiple reflection points on the convex spherical surface. End face pumping is carried out for each reflection point by a LD. reflective coating with two reflectivities is coated on concave spherical mirror of the coupling lens so as to divide the reflective coating into output section and reflection section. The output section is corresponding section for only receiving light beam with only one reflection point, and other part in reflection section. Features are: output power of single light beam, and reducing heat effect.

Description

technical field [0001] The invention belongs to the field of laser technology, in particular to the structural design of a double-mirror non-planar circular laser. Background technique [0002] Generally, all solid-state lasers only output one laser beam from the output coupling mirror to facilitate applications. In most cases, the laser beam generated by the all-solid-state laser has only one reflection point on the output coupling mirror, and a laser beam is output at this reflection point, and the output power is all concentrated in this beam, which is beneficial to the application. [0003] In the end-pumped all-solid-state laser of the semiconductor laser (LD), the radiation beam of the LD can be well matched with the mode of the laser beam generated in the cavity, and higher pumping efficiency and better beam quality can be obtained. But ordinary End-pumped all-solid-state lasers have serious thermal effects when the pump light power is high, which reduces the perform...

AI Technical Summary

Problems solved by technology

The more times the multi-fold cavity is folded, the more mirrors are added, the more complex the structure and the worse the stability

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