Open AccessEXTERNAL-FIELD-INDUCED COHERENCE AND LASING WITHOUT INVERSION: THE V-TYPE SYSTEM
Author(s) -
Zhenfei Luo,
Zhizhan Xu
Publication year - 1993
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.42.252
Subject(s) - lasing threshold , inversion (geology) , coherence (philosophical gambling strategy) , atomic system , density matrix , population inversion , physics , atomic coherence , realization (probability) , quantum mechanics , atomic physics , laser , quantum , mathematics , paleontology , structural basin , biology , statistics
The conditions for realizing lasing without inversion are investigated via density matrix method in bare and dressed states in the V-type closed lifetime-broadened system where atomic coherence is induced by an external electromagnetic field. It is shown that a proper choice of pumping rate may lead to the realization of lasing without inversion.