发光学报2026，Vol.47Issue(6)：1043-1051,9.DOI:10.37188/CJL.20260053
高功率极低发散角976 nm单模半导体激光器
High-power,Single-mode 976 nm Diode Laser with Ultra-low Divergence Angle
摘要
Abstract
Erbium-doped fiber amplifiers(EDFAs)serve as key component of high-capacity,all-optical communi-cation networks,relying critically on high-power,single-mode diode laser pumping sources to achieve efficient opti-cal signal amplification.This paper reports a high-power 976 nm single-mode diode laser chip.The device utilizes an asymmetric Bragg reflector waveguide epitaxial structure,achieving an ultra-low far-field divergence angle and a nearly circular beam profile.Experimental results demonstrate a maximum continuous-wave(CW)output power ex-ceeding 1.5 W for the laser,limited by thermal saturation.The kink-free output power reaches 0.83 W at an injec-tion current of 1.2 A.At this operating current,the vertical and lateral divergence angles containing 95％power are measured at 13.70°and 10.95°respectively.The laser emits at a peak wavelength of 976.16 nm with a narrow spec-tral width of 0.11 nm(at-3 dB)and a side-mode suppression ratio(SMSR)of 40 dB.The far-field distribution remains stable by varying heat-sink temperature and current.Even under thermal saturation,the vertical divergence angle(defined at 95％power containment)stays below 16°.Owing to its high output power,circular symmetry,and narrow spectral characteristics,this laser chip is conducive to the development of low-cost,high-power single-mode pump modules for EDFAs.关键词
布拉格反射波导/单模半导体激光器/高功率/低远场发散角/光纤耦合Key words
Bragg reflection waveguide/single-mode diode laser/high-power/low far-field divergence angle/fiber coupling分类
信息技术与安全科学引用本文复制引用
庞政,田思聪,孟博,佟存柱,汪丽杰,刘亚楠,王延靖,陆寰宇,季云菲,郑显达,王玉山,薛晓娥..高功率极低发散角976 nm单模半导体激光器[J].发光学报,2026,47(6):1043-1051,9.基金项目
吉林省科技发展计划项目(20240602024RC,20250201007GX) （20240602024RC,20250201007GX）
国家自然科学基金(62134008,62434009) （62134008,62434009）
长春市科技发展计划项目(24SH08)Supported by Science and Technology Development Plan Project of Jilin Province(20240602024RC,20250201007GX) （24SH08）
National Natural Science Foundation of China(62134008,62434009) （62134008,62434009）
Science and Technology Development Plan Project of Changchun City(24SH08) （24SH08）
