Interference between electromagnetically induced transparency and two-step excitation in three-level ladder systems

被引：30
|
作者：
Hayashi, Nobuhito [1 ]
Fujisawa, Akihiko [1 ]
Kido, Hiroaki [1 ]
Takahashi, Ken-ichi [1 ]
Mitsunaga, Masaharu [1 ]
机构：
[1] Kumamoto Univ, Grad Sch Sci & Technol, Kumamoto 8608555, Japan
来源：
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2010年 / 27卷 / 08期
关键词：
SODIUM VAPOR; 2-PHOTON ABSORPTION; RUBIDIUM ATOMS; ENHANCEMENT; INHIBITION; TRANSITION;
D O I：
10.1364/JOSAB.27.001645
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We have performed electromagnetically induced transparency (EIT) and two-photon absorption experiments in ladder-type three-level systems in a hot sodium atomic vapor, using the 3S(1/2)-3P(1/2)-4D(3/2), 3S(1/2)-3P(3/2)-4D(3/2,5/2), 3S(1/2)-3P(1/2)-5S(1/2), and 3S(1/2)-3P(3/2)-5S(1/2) transitions. In particular, in the most pronounced 3S(1/2)-3P(1/2)-4D(3/2) system, we have observed quite unique spectral line shapes that are superpositions of sharp dips and peaks, in contrast to ordinary EIT spectra. The peaks and dips have apparently different physical origins, and the line shape can be interpreted as the interference between EIT and two-step excitation. (C) 2010 Optical Society of America
引用
收藏
页码：1645 / 1650
页数：6
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