Deep ultraviolet microcavity laser

Abstract

The invention belongs to the technical field of lasers, and particularly relates to a deep ultraviolet microcavity laser. The deep ultraviolet microcavity laser comprises an elliptical cavity, a light-emitting microrod and an excitation light source, wherein the light-emitting micron rod and the excitation light source are located in the elliptical cavity; the light-emitting microrod is composed of an up-conversion light-emitting material M-N<3+>, M is a crystal material and/or microcrystalline glass, and N<3+> is rare earth ions for realizing up-conversion luminescence; distributed Bragg reflection films are arranged at the two ends of the light-emitting microrod in the light-emitting direction; and the excitation light source excites the light-emitting microrod to emit deep ultraviolet light, and a reflecting film for totally reflecting the excitation light source is arranged on the inner surface of the elliptical cavity. The deep ultraviolet microcavity laser can greatly improve the up-conversion excitation efficiency, has good chemical stability and high absorption efficiency, can fully absorb and excite the pumping light source, and has the characteristics of simple structure and low cost. 本发明属于激光器技术领域，具体涉及一种深紫外微腔激光器。所述深紫外微腔激光器包括：椭圆腔体，以及位于所述椭圆腔体内的发光微米棒和激发光源；所述发光微米棒由上转换发光材料M‑N3+组成；其中，M为晶体材料和/或微晶玻璃，N3+为实现上转换发光的稀土离子；所述发光微米棒沿发光方向的两端设置有分布式布拉格反射膜；所述激发光源激发所述发光微米棒深紫外发光，所述椭圆腔体的内表面设置有全反射所述激发光源的反射膜。该深紫外微腔激光器可以大大提高上转换激发效率，具有很好的化学稳定性，而且吸收效率高，能够充分吸收激发泵浦光源的能力，同时具有结构简单、成本低的特点。