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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 23 — Dec. 1, 2013
  • pp: 5043–5046

Transition from nonresonant to resonant random lasers by the geometrical confinement of disorder

N. Ghofraniha, I. Viola, A. Zacheo, V. Arima, G. Gigli, and C. Conti  »View Author Affiliations

Optics Letters, Vol. 38, Issue 23, pp. 5043-5046 (2013)

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We report on a transition in random lasers that is induced by the geometrical confinement of the emitting material. Different dye doped paper devices with controlled geometry are fabricated by soft lithography and show two distinguished behaviors in the stimulated emission: in the absence of boundary constraints, the energy threshold decreases for larger laser volumes showing the typical trend of diffusive nonresonant random lasers, while when the same material is lithographed into channels, the walls act as cavity and the resonant behavior typical of standard lasers is observed. The experimental results are consistent with the general theories of random and standard lasers and a clear phase diagram of the transition is reported.

© 2013 Optical Society of America

OCIS Codes
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.3380) Lasers and laser optics : Laser materials
(140.3460) Lasers and laser optics : Lasers
(230.0230) Optical devices : Optical devices
(230.4320) Optical devices : Nonlinear optical devices

ToC Category:
Lasers and Laser Optics

Original Manuscript: September 23, 2013
Revised Manuscript: October 22, 2013
Manuscript Accepted: October 22, 2013
Published: November 22, 2013

N. Ghofraniha, I. Viola, A. Zacheo, V. Arima, G. Gigli, and C. Conti, "Transition from nonresonant to resonant random lasers by the geometrical confinement of disorder," Opt. Lett. 38, 5043-5046 (2013)

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