Selective loss tailoring of broad-area diode lasers. (19th January 2021)

• Record Type: Journal Article
• Authors: Su, Jiaxin; Tong, Cunzhu; Wang, Lijie; Wang, Yanjing; Lu, Huanyu; Wang, Jun; Tan, Shaoyang; Li, Sensen; Peng, Hangyu; Wang, Lijun
• Is Part Of: Japanese journal of applied physics. Volume 60:Number 2(2021)
• Publication Date: 2021-01-19
• Subjects: mode filter -- beam quality -- high-order mode -- far-field blooming -- thermal lens -- high-power diode laser; Physics -- Periodicals; 621.05
• DOI: 10.35848/1347-4065/abd70c
• Languages: English
• ISSNs: 0021-4922

Abstract

Abstract: High-power high-brightness broad-area diode lasers have poor lateral beam quality, which has limited the application range of this kind of device. To improve the lateral beam quality, a sawtooth microstructure laser was proposed and the microstructures were carefully designed according to the profiles of each lateral mode and their dependence on the self-heating induced thermal lens effect. As a result of selective mode loss adjustment, a 42% improvement in lateral beam quality was achieved under the power-maintained condition. This technology enables us to develop high-brightness direct-diode laser systems.