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Title: One-mirror random laser

Abstract

A one-mirror random laser is described. The necessary feedback is from random scattering inside a disordered medium and a reflective mirror together. With such a half-random and half-conventional cavity, the lasing threshold can be reduced dramatically, especially for systems in the localized regime, where the lasing threshold is otherwise very difficult to reach by optical pumping. The threshold decrease is due to better overlap between the pumped region and lasing modes, as well as the different eigenmode structure of the half-close system. An Anderson-type lattice Hamiltonian model was used to investigate the decay rate distributions in one-dimensional systems open at one end and at both ends. Analysis on the small decay rate tail showed an enhancement of localization in the former kind of systems.

Authors:
;  [1]
  1. Institute for Laser Science, University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, (Japan)
Publication Date:
OSTI Identifier:
20640121
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 68; Journal Issue: 2; Other Information: DOI: 10.1103/PhysRevA.68.025803; (c) 2003 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:
74 ATOMIC AND MOLECULAR PHYSICS; DECAY; DISTRIBUTION; FEEDBACK; HAMILTONIANS; LASER CAVITIES; LASER MIRRORS; LASERS; ONE-DIMENSIONAL CALCULATIONS; OPTICAL PUMPING; RANDOMNESS; SCATTERING

Citation Formats

Feng, Yan, and Ueda, Ken-ichi. One-mirror random laser. United States: N. p., 2003. Web. doi:10.1103/PhysRevA.68.025803.
Feng, Yan, & Ueda, Ken-ichi. One-mirror random laser. United States. doi:10.1103/PhysRevA.68.025803.
Feng, Yan, and Ueda, Ken-ichi. Fri . "One-mirror random laser". United States. doi:10.1103/PhysRevA.68.025803.
@article{osti_20640121,
title = {One-mirror random laser},
author = {Feng, Yan and Ueda, Ken-ichi},
abstractNote = {A one-mirror random laser is described. The necessary feedback is from random scattering inside a disordered medium and a reflective mirror together. With such a half-random and half-conventional cavity, the lasing threshold can be reduced dramatically, especially for systems in the localized regime, where the lasing threshold is otherwise very difficult to reach by optical pumping. The threshold decrease is due to better overlap between the pumped region and lasing modes, as well as the different eigenmode structure of the half-close system. An Anderson-type lattice Hamiltonian model was used to investigate the decay rate distributions in one-dimensional systems open at one end and at both ends. Analysis on the small decay rate tail showed an enhancement of localization in the former kind of systems.},
doi = {10.1103/PhysRevA.68.025803},
journal = {Physical Review. A},
issn = {1050-2947},
number = 2,
volume = 68,
place = {United States},
year = {2003},
month = {8}
}