Journal article
Physical manifestation of extreme events in random lasers
Optics letters, Vol.40(21), pp.5046-5049
11/01/2015
DOI: 10.1364/OL.40.005046
PMID: 26512515
Abstract
We report our studies on exponentially-tempered Levy sums that explain coherent random lasers based on non-resonant feedback. We investigate the hierarchy in the sums and identify the contribution of the extremes over a wide range of excitation energies and disorder strengths. Subsequently, we carry out experiments in which the physical manifestation of these extremes is revealed. At the appropriate gain and disorder, the extremes manifest as the sharp ultranarrow modes in the spectrum. At stronger excitation and disorder, the peaks disappear due to the reduced rarity of the extremes, compounded by the decreased magnitude effected by the tempering. (C) 2015 Optical Society of America
Details
- Title: Subtitle
- Physical manifestation of extreme events in random lasers
- Creators
- Ravitej Uppu - Tata Institute of Fundamental ResearchSushil Mujumdar - Tata Institute of Fundamental Research
- Resource Type
- Journal article
- Publication Details
- Optics letters, Vol.40(21), pp.5046-5049
- Publisher
- Optical Soc Amer
- DOI
- 10.1364/OL.40.005046
- PMID
- 26512515
- ISSN
- 0146-9592
- eISSN
- 1539-4794
- Number of pages
- 4
- Grant note
- XIIP0243 / Department of Atomic Energy, Government of India (DAE) Department of Science and Technology, Government of India; Department of Science & Technology (India)
- Language
- English
- Date published
- 11/01/2015
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984429040602771
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