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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 3 — Feb. 1, 2014
  • pp: 655–658

Angular distribution of random laser emission

F. Tenopala-Carmona, C. García-Segundo, Natanael Cuando-Espitia, and Juan Hernández-Cordero  »View Author Affiliations

Optics Letters, Vol. 39, Issue 3, pp. 655-658 (2014)

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We present an experimental analysis of the angular distribution of the emission of a random laser (RL) operating in the diffusive regime (1% volume fraction of scatterers). The RL ensemble was made of silica particles suspended in a 1:1 methanol:water matrix with Rhodamine 6G dye as the active medium. We found that, for specific pumping-energy-dependent scattering strength, the RL spectrum reached stable features that were angularly preserved. From the analysis, we propose that this defines a novel parametric condition that may well be the equivalent of the RL critical volume, as proposed by Letokhov.

© 2014 Optical Society of America

OCIS Codes
(140.2050) Lasers and laser optics : Dye lasers
(160.3380) Materials : Laser materials
(160.6030) Materials : Silica
(290.4210) Scattering : Multiple scattering
(260.2710) Physical optics : Inhomogeneous optical media

ToC Category:

Original Manuscript: October 31, 2013
Revised Manuscript: December 18, 2013
Manuscript Accepted: December 25, 2013
Published: January 29, 2014

F. Tenopala-Carmona, C. García-Segundo, Natanael Cuando-Espitia, and Juan Hernández-Cordero, "Angular distribution of random laser emission," Opt. Lett. 39, 655-658 (2014)

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