Up-conversion excitation unit and laser thereof

Abstract

The invention belongs to the technical field of lasers, and particularly relates to an up-conversion excitation unit which comprises a total reflection mirror and a non-total reflection mirror which are oppositely arranged in parallel, and an up-conversion unit arranged between the total reflection mirror and the non-total reflection mirror. The up-conversion unit comprises a microcrystal carrier and an up-conversion material distributed in the microcrystal carrier. According to the up-conversion excitation unit provided by the invention, the total reflection mirror and the non-total reflection mirror are sequentially introduced to the two opposite sides of the up-conversion unit, so that the absorption efficiency of the up-conversion material in the cavity to incident light waves is improved, the conversion efficiency of the up-conversion material to the light waves is improved, the laser emission efficiency of the up-conversion excitation unit is improved, and the overflow loss of the excitation light source is reduced. 本发明属于激光器技术领域，尤其涉及一种上转换激发单元，所述上转换激发单元包括：相对且平行设置的全反射镜和非全反射镜，以及设置在所述全反射镜和所述非全反射镜之间的上转换单元；所述上转换单元包括微晶载体和分布在所述微晶载体内部的上转换材料。本发明提供的上转换激发单元，通过在上转换单元的相对两侧，依次引入非全反射镜和全反射镜，提高腔体内上转换材料对入射光波的吸收效率，从而提升上转换材料对光波的转化效率，增加上转换激发单元的激光发射效率，减少了激发光源的溢出损失。