Journal article
Exponentially Tempered Levy Sums in Random Lasers
Physical review letters, Vol.114(18), pp.183903-183903
05/08/2015
DOI: 10.1103/PhysRevLett.114.183903
PMID: 26001004
Abstract
Levy fluctuations have associated infinities due to diverging moments, a problem that is circumvented by putting restrictions on the magnitude of the fluctuations, realizing a process called the truncated Levy flight. We show that a perfect manifestation of this exotic process occurs in coherent random lasers, and it turns out to be the single underlying explanation for the complete statistical behavior of nonresonant random lasers. A rigorous parameter estimation of the number of summand variables, the truncation parameter, and the power-law exponent is carried out over a wide range of randomness, inversion, and system size. Random laser intensity is modeled on a unique platform of exponentially tempered Levy sums. The computed behavior exhibits an excellent agreement with the experimentally observed fluctuation behavior.
Details
- Title: Subtitle
- Exponentially Tempered Levy Sums in Random Lasers
- Creators
- Ravitej Uppu - Tata Institute of Fundamental ResearchSushil Mujumdar - Tata Institute of Fundamental Research
- Resource Type
- Journal article
- Publication Details
- Physical review letters, Vol.114(18), pp.183903-183903
- Publisher
- Amer Physical Soc
- DOI
- 10.1103/PhysRevLett.114.183903
- PMID
- 26001004
- ISSN
- 0031-9007
- eISSN
- 1079-7114
- Number of pages
- 5
- Grant note
- DST through the Ramanujan Fellowship XIIP0243 / DAE, Government of India; Department of Atomic Energy (DAE)
- Language
- English
- Date published
- 05/08/2015
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984442205202771
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