Astrophysical Lasers with Radiation Pumping by Accidental Resonance
(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.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/130415
- author
- Johansson, Sveneric LU and Letokhov, Vladilen LU
- organization
- publishing date
- 2003
- 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
- 2016-04-01 12:29:35
- date last changed
- 2024-01-08 22:21:27
@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}}, keywords = {{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}}, doi = {{10.1086/380423}}, volume = {{115}}, year = {{2003}}, }