Fiber-coupled high-power diode-pumped solid-state lasers for laser cleaning

Dewang Yang; Yong Wang; Yuan Ren

doi:10.1117/12.2547131

21 February 2020 Fiber-coupled high-power diode-pumped solid-state lasers for laser cleaning

Dewang Yang, Yong Wang, Yuan Ren

Proceedings Volume 11259, Solid State Lasers XXIX: Technology and Devices; 112590T (2020) https://doi.org/10.1117/12.2547131
Event: SPIE LASE, 2020, San Francisco, California, United States

Abstract

We have developed a kind of compact diode-pumped solid-state (DPSS) lasers targeting laser cleaning applications in railway, automobile and aeroplane industries. Based on a master oscillate power amplifier (MOPA) configuration, the laser output is coupled to optical fibers with core diameters of 0.2-0.4 mm depending on the output power. The master oscillator is an actively Q-switched Nd:YAG laser in a thermal insensitive cavity for good beam quality at high average power. The laser repetition rate is adjustable in 1-10 kHz. At a typical 8 kHz, we obtained pulse energy ~50 mJ, pulse width ~50 ns, peak power ~0.8 MW and M²~22, which can satisfy the requirements of most industrial laser cleaning and take advantage over commercial fiber lasers with similar output powers in terms of processing efficiency and machineable materials. The increase of either pump power or repetition rate can elevate average laser output power up to 1 kW.

Conference Presentation

Citation Download Citation

Dewang Yang, Yong Wang, and Yuan Ren "Fiber-coupled high-power diode-pumped solid-state lasers for laser cleaning", Proc. SPIE 11259, Solid State Lasers XXIX: Technology and Devices, 112590T (21 February 2020); https://doi.org/10.1117/12.2547131

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