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Proceedings Paper

High-power single-pass pumped diamond Raman oscillator
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Paper 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.

Paper Details

Date Published: 26 February 2018
PDF: 6 pages
Proc. SPIE 10512, Fiber Lasers XV: Technology and Systems, 105120G (26 February 2018); doi: 10.1117/12.2288213
Show Author Affiliations
Matthias Heinzig, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Friedrich-Schiller-Univ. Jena (Germany)
Till Walbaum, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Robert J. Williams, Macquarie Univ. (Australia)
Ondrej Kitzler, Macquarie Univ. (Australia)
Richard P. Mildren, Macquarie Univ. (Australia)
Thomas Schreiber, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Ramona Eberhardt, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Andreas Tünnermann, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Friedrich-Schiller-Univ. Jena (Germany)


Published in SPIE Proceedings Vol. 10512:
Fiber Lasers XV: Technology and Systems
Ingmar Hartl; Adrian L. Carter, Editor(s)

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