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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 34, Iss. 3 — Feb. 1, 2009
  • pp: 344–346

Directional random-laser emission from Bragg gratings with irregular perturbation

Qinghai Song, Liying Liu, and Lei Xu  »View Author Affiliations

Optics Letters, Vol. 34, Issue 3, pp. 344-346 (2009)

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Here we report the laser actions inside an active organic–inorganic grating with some irregular perturbation. In an optical excitation experiment, band-edge and random-laser emissions were both observed. The laser thresholds of the two laser actions are very close, which shows that random laser sometimes can operate with a threshold comparable to band-edge emission. Owing to the diffraction of the grating, directional emission with a narrow divergence angle was also obtained.

© 2009 Optical Society of America

OCIS Codes
(140.4780) Lasers and laser optics : Optical resonators
(290.4210) Scattering : Multiple scattering
(230.5298) Optical devices : Photonic crystals

ToC Category:
Optical Devices

Original Manuscript: August 13, 2008
Revised Manuscript: December 11, 2008
Manuscript Accepted: December 12, 2008
Published: January 28, 2009

Qinghai Song, Liying Liu, and Lei Xu, "Directional random-laser emission from Bragg gratings with irregular perturbation," Opt. Lett. 34, 344-346 (2009)

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