Research on ultracold cesium molecule long-range states by high-resolution photoassociative spectroscopy
In this paper, an ultra-high resolution photoassociation spectroscopy study on photoassociation of cesium atoms is reported. The cold cesium gas in the magneto-optical trap is illuminated by a photoassociation laser with red-tuning as large as 40 cm −1 below the 6 S 1/2 + 6 P 3/2 dissociation limit,...
Saved in:
Published in | Science China. Physics, mechanics & astronomy Vol. 51; no. 2; pp. 147 - 156 |
---|---|
Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Beijing
Science in China Press
01.02.2008
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | In this paper, an ultra-high resolution photoassociation spectroscopy study on photoassociation of cesium atoms is reported. The cold cesium gas in the magneto-optical trap is illuminated by a photoassociation laser with red-tuning as large as 40 cm
−1
below the 6
S
1/2
+ 6
P
3/2
dissociation limit, and the photoassociation to the excited state ultracold molecule is detected. High signal-to-noise ratio is obtained by using the lock-in detection of the fluorescence from the modulated cold Cs atoms. The 0
g
−
, 1
g
and 0
u
+
long-range states which correspond to 6
S
1/2
+ 6
P
3/2
dissociation limit are present in the photoassociation spectrum. The effective coefficients of leading long-range interactions and the corresponding vibrational quantum number are obtained using LeRoy-Bernstein Law. It is found that photoassociation process creates rotating molecules and the high
J
value is a hint that higher partial waves participate in the PA process in the presence of trapping laser. |
---|---|
Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 1672-1799 1674-7348 1862-2844 1869-1927 |
DOI: | 10.1007/s11433-008-0024-7 |