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Title: Time Dependent Theory for Random Lasers

Abstract

A model to simulate the phenomenon of random lasing is presented. It couples Maxwell's equations with the rate equations of electronic population in a disordered system. Finite difference time domain methods are used to obtain the field pattern and the spectra of localized lasing modes inside the system. A critical pumping rate P{sup c}{sub r} exists for the appearance of the lasing peaks. The number of lasing modes increases with the pumping rate and the length of the system. There is a lasing mode repulsion. This property leads to a saturation of the number of modes for a given size system and a relation between the localization length {xi} and average mode length L{sub m} . (c) 2000 The American Physical Society.

Authors:
;
Publication Date:
OSTI Identifier:
20217124
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 85; Journal Issue: 1; Other Information: PBD: 3 Jul 2000; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; LASERS; SEMICLASSICAL APPROXIMATION; MAXWELL EQUATIONS; AMPLIFICATION; THEORETICAL DATA

Citation Formats

Jiang, Xunya, and Soukoulis, C M. Time Dependent Theory for Random Lasers. United States: N. p., 2000. Web. doi:10.1103/PhysRevLett.85.70.
Jiang, Xunya, & Soukoulis, C M. Time Dependent Theory for Random Lasers. United States. doi:10.1103/PhysRevLett.85.70.
Jiang, Xunya, and Soukoulis, C M. Mon . "Time Dependent Theory for Random Lasers". United States. doi:10.1103/PhysRevLett.85.70.
@article{osti_20217124,
title = {Time Dependent Theory for Random Lasers},
author = {Jiang, Xunya and Soukoulis, C M},
abstractNote = {A model to simulate the phenomenon of random lasing is presented. It couples Maxwell's equations with the rate equations of electronic population in a disordered system. Finite difference time domain methods are used to obtain the field pattern and the spectra of localized lasing modes inside the system. A critical pumping rate P{sup c}{sub r} exists for the appearance of the lasing peaks. The number of lasing modes increases with the pumping rate and the length of the system. There is a lasing mode repulsion. This property leads to a saturation of the number of modes for a given size system and a relation between the localization length {xi} and average mode length L{sub m} . (c) 2000 The American Physical Society.},
doi = {10.1103/PhysRevLett.85.70},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 1,
volume = 85,
place = {United States},
year = {2000},
month = {7}
}