宽发光截面半导体激光器的光束质量研究  

作　　者：黄时康 李环宇 柯旋 

机构地区：[1]深圳市特发信息光网科技股份有限公司,广东东莞523407 [2]深圳市特发信息股份有限公司,广东深圳518000

出　　处：《现代传输》2022年第1期47-53,共7页Modern Transmission

摘　　要：本文通过二阶矩法,分析了二维增益调制对于宽发光截面半导体激光器(BAL)的光束质量改善效果。光束质量是激光器工业应用中需要考虑的重要因素。BAL可以提供更大的输出功率,但其光束质量较常规半导体激光器差。本文测量了经过二维增益调制后的BAL。结果与未经过调制的BAL进行了比较。结果表明,经过二维增益调制后的BAL具有较高的阈值和较低的斜率效率,光束质量提高了20%。In this article,the effect of two-dimensional gain modulation on beam quality improvement of broad area lasers(BAL)is analyzed by the second moment method.Beam quality is a significant factor which need to take into consideration in industry applications.Broad area lasers can provide larger output power,but their beam quality is worse compared with narrow stripe lasers.In this article,lasers which applied two-dimensional gain modulation have been measured.The result is compared with unstructured lasers with the same length.Results shows that compared with unstructured lasers,the structured lasers have higher threshold and lower slope efficiency but the beam quality can improve about 20%.

关 键 词：宽发光截面半导体激光器 光束质量 二次矩法 

分 类 号：TN248.4[电子电信—物理电子学]