Journal article
Persistent coherent random lasing using resonant scatterers
Optics express, Vol.19(23), pp.23523-23531
11/07/2011
DOI: 10.1364/OE.19.023523
PMID: 22109230
Abstract
We study the frequency behavior of coherent random lasers consisting monodisperse scatterers with single-particle resonances. A three-dimensional photon propagation model is employed to compute the wavelength-sensitive path length distribution of fluorescence photons in this system. We observe that a persistence interval of wavelengths exists for the coherent random lasing modes, corresponding to the Mie resonances of the individual resonant scatterer. Within the interval, characteristic pulse to pulse fluctuations continue to be observed from the system. The gain competition in the random laser suppresses likely coherent modes in other regions of the emission band, thereby reducing the wavelength fluctuations in the random laser. We further illustrate the tunability of this persistence interval by varying the size parameter of the resonant scatterers. (C) 2011 Optical Society of America
Details
- Title: Subtitle
- Persistent coherent random lasing using resonant scatterers
- Creators
- Ravitej Uppu - Tata Institute of Fundamental ResearchSushil Mujumdar - Tata Institute of Fundamental Research
- Resource Type
- Journal article
- Publication Details
- Optics express, Vol.19(23), pp.23523-23531
- Publisher
- Optical Soc Amer
- DOI
- 10.1364/OE.19.023523
- PMID
- 22109230
- ISSN
- 1094-4087
- eISSN
- 1094-4087
- Number of pages
- 9
- Language
- English
- Date published
- 11/07/2011
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984442197802771
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