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Astrophysical Lasers with Radiation Pumping by Accidental Resonance

Johansson, Sveneric LU and Letokhov, Vladilen LU (2003) In Publications of the Astronomical Society of the Pacific 115(814). p.1375-1382
Abstract
In this paper we consider a general problem of astrophysical lasersoperating with optical pumping by accidental resonance (PAR) with strongspontaneous emission lines of other elements. The origin of populationinversion and the coefficient of amplification due to the opticalexcitation of atoms (ions) by a four-level scheme with PAR are analyzed.We elucidate conclusively the question of the manifestation ofastrophysical lasers in the optical region of the spectrum, which inprinciple differs from that of astrophysical masers in the microwaverange.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
line: formation, Atomic processes, ISM: Masers, radiation mechanisms: nonthermal
in
Publications of the Astronomical Society of the Pacific
volume
115
issue
814
pages
1375 - 1382
publisher
University of Chicago Press
external identifiers
  • wos:000186681500004
  • scopus:0346343152
ISSN
1538-3873
DOI
10.1086/380423
language
English
LU publication?
yes
id
2779bcb7-3d4f-4d4e-828e-c3f635530d10 (old id 130415)
date added to LUP
2007-07-13 12:15:45
date last changed
2018-05-29 11:02:24
@article{2779bcb7-3d4f-4d4e-828e-c3f635530d10,
  abstract     = {In this paper we consider a general problem of astrophysical lasersoperating with optical pumping by accidental resonance (PAR) with strongspontaneous emission lines of other elements. The origin of populationinversion and the coefficient of amplification due to the opticalexcitation of atoms (ions) by a four-level scheme with PAR are analyzed.We elucidate conclusively the question of the manifestation ofastrophysical lasers in the optical region of the spectrum, which inprinciple differs from that of astrophysical masers in the microwaverange.},
  author       = {Johansson, Sveneric and Letokhov, Vladilen},
  issn         = {1538-3873},
  keyword      = {line: formation,Atomic processes,ISM: Masers,radiation mechanisms: nonthermal},
  language     = {eng},
  number       = {814},
  pages        = {1375--1382},
  publisher    = {University of Chicago Press},
  series       = {Publications of the Astronomical Society of the Pacific},
  title        = {Astrophysical Lasers with Radiation Pumping by Accidental Resonance},
  url          = {http://dx.doi.org/10.1086/380423},
  volume       = {115},
  year         = {2003},
}