26 February 2018 High-power single-pass pumped diamond Raman oscillator
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Proceedings Volume 10512, Fiber Lasers XV: Technology and Systems; 105120G (2018) https://doi.org/10.1117/12.2288213
Event: SPIE LASE, 2018, San Francisco, California, United States
Abstract
We present our recent advances on power scaling of a high-power single-pass pumped CVD-diamond Raman oscillator at 1.2 μm. The single pass scheme reduced feedback to the high gain fiber amplifier, which pumps the oscillator. The Yb-doped multi-stage fiber amplifier itself enables up to 1 kW output power at a narrow linewidth of 0.16 nm. We operate this laser in quasi-cw mode at 10% duty cycle and on-time (pulse) duration of 10 ms. With a maximum conversion efficiency of 39%, a maximum steady-state output power of 380 W and diffraction limited beam quality was achieved.
© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Matthias Heinzig, Matthias Heinzig, Till Walbaum, Till Walbaum, Robert J. Williams, Robert J. Williams, Ondrej Kitzler, Ondrej Kitzler, Richard P. Mildren, Richard P. Mildren, Thomas Schreiber, Thomas Schreiber, Ramona Eberhardt, Ramona Eberhardt, Andreas Tünnermann, Andreas Tünnermann, } "High-power single-pass pumped diamond Raman oscillator", Proc. SPIE 10512, Fiber Lasers XV: Technology and Systems, 105120G (26 February 2018); doi: 10.1117/12.2288213; https://doi.org/10.1117/12.2288213
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