Hundred-watt CW and Joule level pulsed output from Raman fiber laser in 1.7-μm band

Andrew Grimes; Anand Hariharan; Yingzhi Sun; Simona Ovtar; Poul Kristensen; Philip G. Westergaard; Steven Rako; Cory Baumgarten; Robert C. Stoneman; Jeffrey W. Nicholson

doi:10.1117/12.2545034

21 February 2020 Hundred-watt CW and Joule level pulsed output from Raman fiber laser in 1.7 μm band

Andrew Grimes, Anand Hariharan, Yingzhi Sun, Simona Ovtar, Poul Kristensen, Philip G. Westergaard, Steven Rako, Cory Baumgarten, Robert C. Stoneman, Jeffrey W. Nicholson

Author Affiliations +

Proceedings Volume 11260, Fiber Lasers XVII: Technology and Systems; 112601S (2020) https://doi.org/10.1117/12.2545034
Event: SPIE LASE, 2020, San Francisco, California, United States

Abstract

We demonstrate 104 Watts of in-band output power from a cascaded Raman fiber laser operating around 1.7 μm with a spectral purity of over 90% operating in both continuous wave and pulsed regimes. Through the use of a filter fiber with its cutoff wavelength designed between the 6th and 7th Stokes orders, output above 1.8 μm is suppressed below threshold values. In the pulsed regime the laser produces output pulses ranging from 11.5 mJ pulses with 100 μs pulse width to 10 J pulses with 100 ms pulse width.

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Andrew Grimes, Anand Hariharan, Yingzhi Sun, Simona Ovtar, Poul Kristensen, Philip G. Westergaard, Steven Rako, Cory Baumgarten, Robert C. Stoneman, and Jeffrey W. Nicholson "Hundred-watt CW and Joule level pulsed output from Raman fiber laser in 1.7 μm band", Proc. SPIE 11260, Fiber Lasers XVII: Technology and Systems, 112601S (21 February 2020); https://doi.org/10.1117/12.2545034

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