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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 22 — Oct. 26, 2009
  • pp: 19887–19893

High-efficiency, room-temperature nanosecond Yb:YAG laser

M. Siebold, M. Loeser, U. Schramm, J. Koerner, M. Wolf, M. Hellwing, J. Hein, and K. Ertel  »View Author Affiliations

Optics Express, Vol. 17, Issue 22, pp. 19887-19893 (2009)

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Yb3+-doped gain media offer favorable properties for diode-pumped laser amplifiers for high-energy ns-pulses. To reach high optical-to-optical conversion efficiencies at room temperature however, very high and often impractical fluences are required both for pumping and extraction. Low temperature operation offers a solution, but the required cryogenic cooling systems add considerable complexity, bulkiness and cost. Multi-passing both pump and extraction beams through the gain medium is an alternative approach to overcome efficiency limitations at room temperature. In this article we present numerical and experimental results to this effect. We demonstrated ns-pulse output from a diode-pumped Yb:YAG amplifier at an energy of 566 mJ and an optical-to-optical efficiency of 20%, which is almost a doubling of the efficiency achieved with ns-lasers employing Yb3+-doped gain media at this energy level.

© 2009 Optical Society of America

OCIS Codes
(140.3280) Lasers and laser optics : Laser amplifiers
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3615) Lasers and laser optics : Lasers, ytterbium

ToC Category:
Lasers and Laser Optics

Original Manuscript: July 14, 2009
Revised Manuscript: September 24, 2009
Manuscript Accepted: September 25, 2009
Published: October 19, 2009

M. Siebold, M. Loeser, U. Schramm, J. Koerner, M. Wolf, M. Hellwing, J. Hein, and K. Ertel, "High-efficiency, room-temperature nanosecond Yb:YAG laser," Opt. Express 17, 19887-19893 (2009)

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  1. A. Giesen and J. Speiser, "Fifteen years of work on thin-disk lasers: Results and scaling laws," IEEE J. Quantum Electron.(ST) 13, 598-609 (2007). [CrossRef]
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