Measurement of the trap parameters of a magneto-optical trap by external periodic perturbation

被引：8
|
作者：
Moon, Geol [1 ]
Heo, Myoung-Sun [1 ]
Kim, Yonghee [1 ]
Noh, Heung-Ryoul [2 ]
Jhe, Wonho [1 ]
机构：
[1] Seoul Natl Univ, Sch Phys, Seoul 151747, South Korea
[2] Chonnam Natl Univ, Dept Phys, Kwangju 500757, South Korea
来源：
PHYSICAL REVIEW A | 2010年 / 81卷 / 03期
关键词：
DOPPLER LIMIT; DENSITY; FORCE; ATOMS; DYNAMICS;
D O I：
10.1103/PhysRevA.81.033425
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report a simple method for trap parameter measurement by realizing forced harmonic oscillation in a magneto-optical trap (MOT). Through the resonance curve of the vibrational amplitude of the harmonic oscillation on the driving frequency of the laser intensity, we measured the damping coefficient and trap frequency of trapped atoms in the MOT under various conditions and compared them with those obtained from the parametric resonance. In particular, we report a significant effect of a transverse laser on one-dimensional harmonic oscillation. This effect is expected to explain the discrepancies in other previous experiments between the experimental and theoretical results.
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页数：4
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