Generating kW laser light at 532 nm via second harmonic generation of a high power Yb-doped fiber amplifier

Peyman Ahmadi; Daniel Creeden; Daniel Aschaffenburg; Vadim Mokan; Mitchell Underwood; Andrea Caprara; Qi-Ze Shu; Luis Spinelli; John Minelly; Ivaylo Nikolov

doi:10.1117/12.2546377

2 March 2020 Generating kW laser light at 532 nm via second harmonic generation of a high power Yb-doped fiber amplifier

Peyman Ahmadi, Daniel Creeden, Daniel Aschaffenburg, Vadim Mokan, Mitchell Underwood, Andrea Caprara, Qi-Ze Shu, Luis Spinelli, John Minelly, Ivaylo Nikolov

Author Affiliations +

Proceedings Volume 11264, Nonlinear Frequency Generation and Conversion: Materials and Devices XIX; 1126414 (2020) https://doi.org/10.1117/12.2546377
Event: SPIE LASE, 2020, San Francisco, California, United States

Abstract

We present the development of a high-power laser source operating at 532 nm produced by frequency doubling a Ybdoped fiber amplifier. The fiber amplifier has a multistage design, and uses large mode area Yb-doped fibers as the gain medium to produce > 2 kW of laser power at 1064 nm. The amplifier design is optimized to reduce non-linear effects, and operates at linewidths as narrow as 45 GHz. By focusing the fiber amplifier output into an LBO crystal, more than 1 kW of 532 nm light is produced. Single pass conversion efficiencies as high as 54% are achieved providing a unique combination of high power and high quality 532 nm laser source. The 532 nm laser is fiber coupled, making it an ideal source for industrial applications.

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Citation Download Citation

Peyman Ahmadi, Daniel Creeden, Daniel Aschaffenburg, Vadim Mokan, Mitchell Underwood, Andrea Caprara, Qi-Ze Shu, Luis Spinelli, John Minelly, and Ivaylo Nikolov "Generating kW laser light at 532 nm via second harmonic generation of a high power Yb-doped fiber amplifier", Proc. SPIE 11264, Nonlinear Frequency Generation and Conversion: Materials and Devices XIX, 1126414 (2 March 2020); https://doi.org/10.1117/12.2546377

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