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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 37, Iss. 9 — May. 1, 2012
  • pp: 1463–1465

High-power Er:YAG laser with quasi-top-hat output beam

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

Optics Letters, Vol. 37, Issue 9, pp. 1463-1465 (2012)

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A simple method for simultaneously exciting the fundamental (TEM00) transverse mode and first order Laguerre-Gaussian (LG01) donut mode in an end-pumped solid-state laser to yield a quasi-top-hat output beam is reported. This approach has been applied to an Er:YAG laser, in-band pumped by an Er,Yb fiber laser, yielding 9.6 W of continuous-wave output at 1645 nm in a top-hat-like beam with beam propagation factor (M2)<2.1 for 24 W of incident pump power at 1532 nm. The corresponding slope efficiency with respect to incident pump power was 49%. The prospects of further scaling of output power and improved overall efficiency are considered.

© 2012 Optical Society of America

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
(140.3580) Lasers and laser optics : Lasers, solid-state

ToC Category:
Lasers and Laser Optics

Original Manuscript: January 11, 2012
Manuscript Accepted: March 1, 2012
Published: April 24, 2012

Virtual Issues
Vol. 7, Iss. 7 Virtual Journal for Biomedical Optics

J. W. Kim, J. I. Mackenzie, J. R. Hayes, and W. A. Clarkson, "High-power Er:YAG laser with quasi-top-hat output beam," Opt. Lett. 37, 1463-1465 (2012)

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