Open AccessAbsorption and dispersion in probe laser in the four-level Y-type atom system
Author(s) -
Liying Zhang,
Zhengdong Liu
Publication year - 2005
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.54.3641
Subject(s) - laser , dispersion (optics) , electromagnetically induced transparency , absorption (acoustics) , materials science , refractive index , optics , atom (system on chip) , atomic physics , atom probe , physics , computer science , embedded system , transmission electron microscopy
In this paper we have calculated the absorption and dispersion of the probe laser in the four_level Y_type atom system at low light levels and found that if the external light fields are changed,the system would exhibit an electromagnetically induced transparency effect.At the same time,we found that the system could also exhibit enhancement accompanied with a big negative refractive index,and if the light field phase is changed,the absorption and dispersion of the probe laser are also changed.