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Optics Letters

Optics Letters

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  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 4 — Feb. 15, 2014
  • pp: 1022–1025

Role of cavity degeneracy for high-order mode excitation in end-pumped solid-state lasers

Nicolas Barré, Marco Romanelli, and Marc Brunel  »View Author Affiliations


Optics Letters, Vol. 39, Issue 4, pp. 1022-1025 (2014)
http://dx.doi.org/10.1364/OL.39.001022


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Abstract

The possibility of exciting laser modes such as Laguerre–Gaussian (LG) or Ince–Gaussian (IG) modes is discussed on the basis of a gain-matching integral. We reach the conclusion that, using tight pumping and away from degeneracy regions, only the IGn,ne modes can be excited. Furthermore, pure high-order modes with circular or elliptical nodal lines can never be excited. Only an approximation of such modes, which we call quasi-IG or quasi-LG modes, can be observed and only when the cavity is partially degenerate. We provide experimental results in perfect agreement with the theory and discuss the exact nature of the profiles observed at degeneracy in our experiments and elsewhere in the literature.

© 2014 Optical Society of America

OCIS Codes
(140.3410) Lasers and laser optics : Laser resonators
(140.3580) Lasers and laser optics : Lasers, solid-state

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: December 11, 2013
Revised Manuscript: January 9, 2014
Manuscript Accepted: January 12, 2014
Published: February 12, 2014

Citation
Nicolas Barré, Marco Romanelli, and Marc Brunel, "Role of cavity degeneracy for high-order mode excitation in end-pumped solid-state lasers," Opt. Lett. 39, 1022-1025 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-4-1022

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