808nm980nm半导体激光迭阵波长耦合技术

随着半导体激光器在工业、军事、核能等领域的广泛应用，单个半导体激光迭阵的光功率已经不能满足实际需求，这就要求将多个半导体激光器耦合成一束激光，可直接输出或者由光纤耦合输出，以提高半导体光源亮度及光束质量。文章通过采用波长耦合技术进行激光合束，将两种不同波长的半导体激光束通过非相干技术经波长耦合器件耦合输出以实现大功率高效率输出，便于满足工业加工需要。介绍了非相干耦合技术中波长耦合原理及关键技术，根据波长需要设计耦合器件，并自行设计采用光学系统对光束进行扩束聚焦,通过实验将808nm和980nm两半导体激光迭阵光束通过此技术进行合束, 最终实现更高功率输出，耦合效率70%，光斑大小为3×3mm2，目前国内没有对此项技术进行研究。

808nm 980nm high power diode laser stack with wavelength coupling

High-power laser diodes based on GaAs semiconductor bars are well established as reliable and highly efficient laser sources.As increasing applications of semiconductor lasers in the laser processing,the single laser diode optical power has not satisfied for the actual requirements.In this paper,the improving laser output methods to couple several diode laser beams into one beam or to couple laser beams by an optical fiber to output directly to improve the brightness were researched and the principle and ke...