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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 25 — Dec. 5, 2011
  • pp: 25672–25684

ASE in thin disk lasers: theory and experiment

P. Peterson, A. Gavrielides, T. C. Newell, N. Vretenar, and W. P. Latham  »View Author Affiliations


Optics Express, Vol. 19, Issue 25, pp. 25672-25684 (2011)
http://dx.doi.org/10.1364/OE.19.025672


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Abstract

We derive equations for the ASE intensity, decay time, and heat load. The crux of our development is frequency integration over the gain lineshape followed by a spatial integration over the emitters. These integrations result in a gain length that is determined from experiment. We measure the gain as a function of incident pump power for a multi-pass pumped Yb:YAG disk doped at 9.8 at.% with an anti-ASE cap. The incident pump powers are up to 3kW. Our fit to the measured gain is within 10% of the measured gain up to pump powers where the gain starts to flatten out and roll over. In this comparison we extract the gain length that turns out to be 43% of the pump spot size of 7mm.

© 2011 OSA

OCIS Codes
(140.3430) Lasers and laser optics : Laser theory
(140.3615) Lasers and laser optics : Lasers, ytterbium

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: August 31, 2011
Revised Manuscript: October 21, 2011
Manuscript Accepted: October 23, 2011
Published: December 1, 2011

Citation
P. Peterson, A. Gavrielides, T. C. Newell, N. Vretenar, and W. P. Latham, "ASE in thin disk lasers: theory and experiment," Opt. Express 19, 25672-25684 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-25-25672


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