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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry M. Van Driel
  • Vol. 24, Iss. 9 — Sep. 1, 2007
  • pp: 2129–2135

Control of gain and amplification in random lasers

G. Zhu, C. E. Small, and M. A. Noginov  »View Author Affiliations


JOSA B, Vol. 24, Issue 9, pp. 2129-2135 (2007)
http://dx.doi.org/10.1364/JOSAB.24.002129


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Abstract

We have studied the competition between the F 3 2 4 I 11 2 4 and F 3 2 4 I 13 2 4 gain channels in the Nd : Ba 5 ( PO 4 ) 3 F random laser. The strength of stimulated emission transitions was influenced by adding to the Nd-doped powder the powder of Cr 4 + : Y 3 Al 5 O 12 , absorbing light at λ = 1.06 μ m , and the 1.32 μ m mirror, which provided an extra stimulated emission feedback. We have demonstrated a robustness of the Nd random laser to contamination. A much better control of the spectrum of the stimulated emission can be obtained by means of wavelength-selective external mirrors.

© 2007 Optical Society of America

OCIS Codes
(140.5680) Lasers and laser optics : Rare earth and transition metal solid-state lasers
(290.1990) Scattering : Diffusion

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: November 22, 2006
Revised Manuscript: April 27, 2007
Manuscript Accepted: May 11, 2007
Published: August 6, 2007

Citation
G. Zhu, C. E. Small, and M. A. Noginov, "Control of gain and amplification in random lasers," J. Opt. Soc. Am. B 24, 2129-2135 (2007)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-24-9-2129


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