Far-field blooming, a serious far-field dependence on driving current, affects the stability of beam quality and applications of broad-area（BA） diode lasers. In this Letter, the lateral ridge waveguide（LRW） is int...Far-field blooming, a serious far-field dependence on driving current, affects the stability of beam quality and applications of broad-area（BA） diode lasers. In this Letter, the lateral ridge waveguide（LRW） is introduced to BA lasers by a simple and cost-effective approach to control the far-field stability and beam divergence. The influences of LRW length on output power, near-and far-field, are investigated and it is found that the optimized LRW length is able to improve both the far-field blooming and output power. The mechanism behind this is analyzed and a 0.13°/A dependence of lateral divergence angle on the injection current is achieved.展开更多
基金supported by the National Natural Science Foundation of China(Nos.61404138 and 61474119)the National Basic Research Program of China(No.2013CB933303)+1 种基金the International Science Technology Cooperation Program of China(No.2013DFR00730)the Opened Fund of the State Key Laboratory on Integrated Optoelectronics(No.IOSKL2016KF15)
文摘Far-field blooming, a serious far-field dependence on driving current, affects the stability of beam quality and applications of broad-area（BA） diode lasers. In this Letter, the lateral ridge waveguide（LRW） is introduced to BA lasers by a simple and cost-effective approach to control the far-field stability and beam divergence. The influences of LRW length on output power, near-and far-field, are investigated and it is found that the optimized LRW length is able to improve both the far-field blooming and output power. The mechanism behind this is analyzed and a 0.13°/A dependence of lateral divergence angle on the injection current is achieved.
