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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 27 — Dec. 19, 2011
  • pp: 26610–26626

Optimising the efficiency of pulsed diode pumped Yb:YAG laser amplifiers for ns pulse generation.

K. Ertel, S. Banerjee, P. D. Mason, P. J. Phillips, M. Siebold, C. Hernandez-Gomez, and J. C. Collier  »View Author Affiliations

Optics Express, Vol. 19, Issue 27, pp. 26610-26626 (2011)

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We present a numerical model of a pulsed, diode-pumped Yb:YAG laser amplifier for the generation of high energy ns-pulses. This model is used to explore how optical-to-optical efficiency depends on factors such as pump duration, pump spectrum, pump intensity, doping concentration, and operating temperature. We put special emphasis on finding ways to achieve high efficiency within the practical limitations imposed by real-world laser systems, such as limited pump brightness and limited damage fluence. We show that a particularly advantageous way of improving efficiency within those constraints is operation at cryogenic temperature. Based on the numerical findings we present a concept for a scalable amplifier based on an end-pumped, cryogenic, gas-cooled multi-slab architecture.

© 2011 OSA

OCIS Codes
(140.3280) Lasers and laser optics : Laser amplifiers
(140.5560) Lasers and laser optics : Pumping
(140.3538) Lasers and laser optics : Lasers, pulsed
(140.3615) Lasers and laser optics : Lasers, ytterbium

ToC Category:
Lasers and Laser Optics

Original Manuscript: November 11, 2011
Revised Manuscript: December 5, 2011
Manuscript Accepted: December 5, 2011
Published: December 14, 2011

K. Ertel, S. Banerjee, P. D. Mason, P. J. Phillips, M. Siebold, C. Hernandez-Gomez, and J. C. Collier, "Optimising the efficiency of pulsed diode pumped Yb:YAG laser amplifiers for ns pulse generation.," Opt. Express 19, 26610-26626 (2011)

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