High power, high brightness, low weight diode laser pump source

Jack Chen Sr.; Juan Li; Min Shi; Xiaopei Dong; Fuying Li; Fangjunyue Guo; Weirong Guo; Baohua Wang; Shengran Li; Chao Lang

doi:10.1117/12.2608481

4 March 2022 High power, high brightness, low weight diode laser pump source

Jack Chen Sr., Juan Li, Min Shi, Xiaopei Dong, Fuying Li, Fangjunyue Guo, Weirong Guo, Baohua Wang, Shengran Li, Chao Lang

Author Affiliations +

Proceedings Volume 11982, Components and Packaging for Laser Systems VIII; 1198204 (2022) https://doi.org/10.1117/12.2608481
Event: SPIE LASE, 2022, San Francisco, California, United States

Abstract

BWT introduced the idea of dense spatial beam combination(DSBC) and proved it experimentally with kW level pump source. Currently, the output power of single emitters has reached 15W~30W@BPP≈5-12mm·mrad with electro-optical efficiency<60%. This makes it possible for the high-power pump source with optical fiber output to maintain high brightness, small volume, and light weight. With commercial available chips, BWT achieved 420W output locked at 976nm from a fiber of 135μm core diameter and NA0.22, and mass of ≈500g. Also 1000W output at 976nm (or 915nm) from a 220μm core diameter 0.22NA fiber is obtained and mass of ≈400g. In the future, with increasing diode chip brightness and electro-optical efficiency, the pump source with high power and mass ratio will have an important role in small size and high power fiber lasers, which will become an active driver for defence and industrial applications.

Conference Presentation

Citation Download Citation

Jack Chen Sr., Juan Li, Min Shi, Xiaopei Dong, Fuying Li, Fangjunyue Guo, Weirong Guo, Baohua Wang, Shengran Li, and Chao Lang "High power, high brightness, low weight diode laser pump source", Proc. SPIE 11982, Components and Packaging for Laser Systems VIII, 1198204 (4 March 2022); https://doi.org/10.1117/12.2608481

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