skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Threshold of random lasers in the incoherent transport regime

Abstract

We study the threshold of random lasers in the regime of incoherent transport. We present a time-dependent three-dimensional model based on the radiative transfer equation and rate equations, allowing us to describe the various transport regimes (ballistic, multiple scattering, diffusive). Numerical simulations based on this model allow us to describe the main features of the lasing threshold. We develop a modal theory of random lasers with incoherent feedback, based on the disordered-averaged modes of the radiative transfer equation. As a first example, we show that this approach predicts the lasing threshold for systems with sizes L ranging from L{approx}l{sub s} (single-scattering regime) to L>>l* (diffusive regime)

Authors:
;  [1]
  1. Laboratoire d'Energetique Moleculaire et Macroscopique, Combustion, Ecole Centrale Paris, Centre National de la Recherche Scientifique, 92295 Chatenay-Malabry Cedex (France)
Publication Date:
OSTI Identifier:
21016046
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 76; Journal Issue: 2; Other Information: DOI: 10.1103/PhysRevA.76.023821; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; EQUATIONS; FEEDBACK; LASERS; LIGHT TRANSMISSION; MULTIPLE SCATTERING; NUMERICAL ANALYSIS; RADIANT HEAT TRANSFER; RANDOMNESS; REACTION KINETICS; SIMULATION; THREE-DIMENSIONAL CALCULATIONS; TIME DEPENDENCE

Citation Formats

Pierrat, R, and Carminati, R. Threshold of random lasers in the incoherent transport regime. United States: N. p., 2007. Web. doi:10.1103/PHYSREVA.76.023821.
Pierrat, R, & Carminati, R. Threshold of random lasers in the incoherent transport regime. United States. doi:10.1103/PHYSREVA.76.023821.
Pierrat, R, and Carminati, R. Wed . "Threshold of random lasers in the incoherent transport regime". United States. doi:10.1103/PHYSREVA.76.023821.
@article{osti_21016046,
title = {Threshold of random lasers in the incoherent transport regime},
author = {Pierrat, R and Carminati, R},
abstractNote = {We study the threshold of random lasers in the regime of incoherent transport. We present a time-dependent three-dimensional model based on the radiative transfer equation and rate equations, allowing us to describe the various transport regimes (ballistic, multiple scattering, diffusive). Numerical simulations based on this model allow us to describe the main features of the lasing threshold. We develop a modal theory of random lasers with incoherent feedback, based on the disordered-averaged modes of the radiative transfer equation. As a first example, we show that this approach predicts the lasing threshold for systems with sizes L ranging from L{approx}l{sub s} (single-scattering regime) to L>>l* (diffusive regime)},
doi = {10.1103/PHYSREVA.76.023821},
journal = {Physical Review. A},
issn = {1050-2947},
number = 2,
volume = 76,
place = {United States},
year = {2007},
month = {8}
}