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Astrophysical lasers and nonlinear optical effects in space

Johansson, Sveneric LU and Letokhov, Vladilen LU (2007) In New Astronomy Reviews 51(5-6). p.443-523
Abstract
The present state of the art concerning astrophysical lasers (APL) and nonlinear optical effects under astrophysical conditions is reviewed. The operational conditions of an APL (amplification under non-LTE conditions) and astrophysical predecessors of the laboratory lasers are considered in the introduction of the review. The rareness of observed APL action in the visible range in comparison with astrophysical masers (APM) in the microwave range is explained. Early proposals of APLs with collisional and optical pumping are discussed. APL/M in the mid-IR and submillimeter ranges linking APL and APM are also discussed. APLs in the Weigelt blobs of Eta Carinae operating in Fell and 01 with a Bowen type optical pumping are considered in... (More)
The present state of the art concerning astrophysical lasers (APL) and nonlinear optical effects under astrophysical conditions is reviewed. The operational conditions of an APL (amplification under non-LTE conditions) and astrophysical predecessors of the laboratory lasers are considered in the introduction of the review. The rareness of observed APL action in the visible range in comparison with astrophysical masers (APM) in the microwave range is explained. Early proposals of APLs with collisional and optical pumping are discussed. APL/M in the mid-IR and submillimeter ranges linking APL and APM are also discussed. APLs in the Weigelt blobs of Eta Carinae operating in Fell and 01 with a Bowen type optical pumping are considered in detail. General questions (narrowing of APL spectral lines, the possibility of scattering feedback and ways of measuring the true spectral width of an APL) are considered. Nonlinear optical effects in astrophysical conditions and resonance-enhanced two-photon conditions, in particular, are discussed in the conclusion. (C) 2007 Elsevier B.V. All rights reserved. (Less)
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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
New Astronomy Reviews
volume
51
issue
5-6
pages
443 - 523
publisher
Elsevier
external identifiers
  • wos:000247801600001
  • scopus:34249099096
ISSN
1872-9630
DOI
10.1016/j.newar.2007.03.002
language
English
LU publication?
yes
id
d83aedec-a05f-4a21-9eba-db81eb5c0da7 (old id 646287)
date added to LUP
2016-04-01 12:13:12
date last changed
2024-01-08 12:38:38
@article{d83aedec-a05f-4a21-9eba-db81eb5c0da7,
  abstract     = {{The present state of the art concerning astrophysical lasers (APL) and nonlinear optical effects under astrophysical conditions is reviewed. The operational conditions of an APL (amplification under non-LTE conditions) and astrophysical predecessors of the laboratory lasers are considered in the introduction of the review. The rareness of observed APL action in the visible range in comparison with astrophysical masers (APM) in the microwave range is explained. Early proposals of APLs with collisional and optical pumping are discussed. APL/M in the mid-IR and submillimeter ranges linking APL and APM are also discussed. APLs in the Weigelt blobs of Eta Carinae operating in Fell and 01 with a Bowen type optical pumping are considered in detail. General questions (narrowing of APL spectral lines, the possibility of scattering feedback and ways of measuring the true spectral width of an APL) are considered. Nonlinear optical effects in astrophysical conditions and resonance-enhanced two-photon conditions, in particular, are discussed in the conclusion. (C) 2007 Elsevier B.V. All rights reserved.}},
  author       = {{Johansson, Sveneric and Letokhov, Vladilen}},
  issn         = {{1872-9630}},
  language     = {{eng}},
  number       = {{5-6}},
  pages        = {{443--523}},
  publisher    = {{Elsevier}},
  series       = {{New Astronomy Reviews}},
  title        = {{Astrophysical lasers and nonlinear optical effects in space}},
  url          = {{http://dx.doi.org/10.1016/j.newar.2007.03.002}},
  doi          = {{10.1016/j.newar.2007.03.002}},
  volume       = {{51}},
  year         = {{2007}},
}