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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 22 — Nov. 15, 2009
  • pp: 3586–3588

Creation of new lasing modes with spatially nonuniform gain

Jonathan Andreasen and Hui Cao  »View Author Affiliations


Optics Letters, Vol. 34, Issue 22, pp. 3586-3588 (2009)
http://dx.doi.org/10.1364/OL.34.003586


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Abstract

We report on the creation of new lasing modes with spatially nonuniform profiles of optical gain in a one-dimensional random structure. It is demonstrated numerically that even without gain saturation and mode competition, the spatial nonuniformity of gain can cause dramatic and complicated changes. New lasing modes appear with frequencies between those of the lasing modes with uniform gain. We examine new modes in detail and find that they exhibit high output directionality. Our results show that random lasing properties may be modified significantly without changing the underlying structure.

© 2009 Optical Society of America

OCIS Codes
(140.3430) Lasers and laser optics : Laser theory
(140.3460) Lasers and laser optics : Lasers
(220.4830) Optical design and fabrication : Systems design

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: September 24, 2009
Revised Manuscript: October 14, 2009
Manuscript Accepted: October 15, 2009
Published: November 13, 2009

Citation
Jonathan Andreasen and Hui Cao, "Creation of new lasing modes with spatially nonuniform gain," Opt. Lett. 34, 3586-3588 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-22-3586

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