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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 3 — Feb. 1, 2007
  • pp: 208–210

Intracavity gain gratings

Aurélie Moreau, Qiong He, Isabelle Zaquine, Alain Maruani, and Robert Frey  »View Author Affiliations


Optics Letters, Vol. 32, Issue 3, pp. 208-210 (2007)
http://dx.doi.org/10.1364/OL.32.000208


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Abstract

Intracavity gain gratings are theoretically demonstrated to exhibit diffraction efficiencies that are 100 times larger than unity at pump powers substantially below the lasing threshold. Experiments performed using a Nd : Y V O 4 microlaser pumped below threshold by two interfering Ti:sapphire laser beams are described. Huge enhancement of the diffraction efficiency ( 5000 × ) and a large increase of the angular selectivity ( 10 × ) are demonstrated despite the angular reduction of the Fabry–Perot cavity finesse. Much better results are expected using gain gratings with larger areas or thinner cavities such as vertical cavity surface-emitting lasers. Such large fan-out values could be very interesting for applications to optical signal processing.

© 2007 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(050.2230) Diffraction and gratings : Fabry-Perot
(140.4480) Lasers and laser optics : Optical amplifiers

ToC Category:
Diffraction and Gratings

History
Original Manuscript: July 19, 2006
Revised Manuscript: October 26, 2006
Manuscript Accepted: October 30, 2006
Published: January 12, 2007

Citation
Aurélie Moreau, Qiong He, Isabelle Zaquine, Alain Maruani, and Robert Frey, "Intracavity gain gratings," Opt. Lett. 32, 208-210 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-3-208

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