Open AccessAN ANY-STATE-INVERSIONLESS LASER
Author(s) -
Zhenfei Luo,
Zhizhan Xu,
Wenqi Zhang
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.42.1231
Subject(s) - coherence (philosophical gambling strategy) , laser , population inversion , inversion (geology) , physics , state (computer science) , optics , computer science , quantum mechanics , geology , paleontology , algorithm , structural basin
An energy-level system with upper-level coherence driven by an external field is investigated. It is shown that a laser may develop without the need of population inversion in any state (bare or dressed states).