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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 37, Iss. 6 — Mar. 15, 2012
  • pp: 1053–1055

Aerosol-based coherent random laser

Anjani Kumar Tiwari, Ravitej Uppu, and Sushil Mujumdar  »View Author Affiliations


Optics Letters, Vol. 37, Issue 6, pp. 1053-1055 (2012)
http://dx.doi.org/10.1364/OL.37.001053


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Abstract

We demonstrate coherent random lasing from an aerosol of dye-doped microdroplets in air. The aerosol is in the form of a linear array of polydisperse, arbitrarily shaped, and randomly spaced microdroplets with average dimensions of about 30 μm. Upon optical excitation, ultranarrow lasing modes were observed in the emission along the axis of the linear array, while the transverse emission exhibited intrascatterer resonance peaks. Direct spatiospectral imaging and lasing threshold studies confirmed the origin of the lasing peaks to be from spatial modes that extended over the array of the polydisperse microdroplets.

© 2012 Optical Society of America

OCIS Codes
(140.2050) Lasers and laser optics : Dye lasers
(160.3380) Materials : Laser materials
(290.4210) Scattering : Multiple scattering
(160.2710) Materials : Inhomogeneous optical media

ToC Category:
Scattering

History
Original Manuscript: December 1, 2011
Revised Manuscript: January 21, 2012
Manuscript Accepted: February 13, 2012
Published: March 12, 2012

Citation
Anjani Kumar Tiwari, Ravitej Uppu, and Sushil Mujumdar, "Aerosol-based coherent random laser," Opt. Lett. 37, 1053-1055 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-6-1053


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