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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 15 — Jul. 18, 2011
  • pp: 14526–14531

High power Er:YAG laser with radially-polarized Laguerre-Gaussian (LG01) mode output

J. W. Kim, J. I. Mackenzie, J. R. Hayes, and W. A. Clarkson  »View Author Affiliations


Optics Express, Vol. 19, Issue 15, pp. 14526-14531 (2011)
http://dx.doi.org/10.1364/OE.19.014526


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Abstract

A simple method for conditioning the pump beam in an end-pumped solid-state laser to allow direct excitation of the first order Laguerre-Gaussian doughnut (LG01) mode is reported. This approach has been applied to a hybrid (fiber-laser-pumped) Er:YAG laser yielding 13.1 W of continuous-wave output at 1645 nm in a radially-polarized LG01 doughnut beam with beam propagation factor (M2) < 2.4 for 34 W of incident pump power at 1532 nm. The corresponding slope efficiency with respect to incident pump power was 48%. The prospects of further power scaling and improved laser performance are discussed.

© 2011 OSA

OCIS Codes
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3500) Lasers and laser optics : Lasers, erbium
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3580) Lasers and laser optics : Lasers, solid-state

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: June 13, 2011
Revised Manuscript: July 1, 2011
Manuscript Accepted: July 4, 2011
Published: July 13, 2011

Citation
J. W. Kim, J. I. Mackenzie, J. R. Hayes, and W. A. Clarkson, "High power Er:YAG laser with radially-polarized Laguerre-Gaussian (LG01) mode output," Opt. Express 19, 14526-14531 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-15-14526


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