Open AccessThe coherent excitation property of a two-level atom w itha hyperfine structure in narrow band laser field
Author(s) -
Lijun Wang,
Yu Hui-Ying
Publication year - 2004
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.53.4151
Subject(s) - hyperfine structure , excitation , atom (system on chip) , atomic physics , laser , physics , field (mathematics) , optics , quantum mechanics , mathematics , computer science , pure mathematics , embedded system
In this paper the semi-classic theory of coherent excitation of a two-level atom was modified and applied to a two-level atom with a hyperfine structure. The im portant result of calculation is as follows: when the exciting laser power is la rge enough, due to the power broadening effect, a narrow-band laser can excite a two-level atom with a hyperfine structure effectively. So it is not necessary t o use a broad-band laser to guarantee excitation efficiency for an atom with hyp erfine split levels.