Accumulative Atom Detection by Magneto-Optical Trap for Near-Field Optical Funnel
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概要
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We use a magneto-optical trap as an integrating counter for descending cold atoms. In the case of cold 87Rb atoms with an initial mean temperature of 9 μK, 60% of the total number of $2.6\times 10^{7}$ are captured after a 26-cm free-fall and trapped for a long time of 270 s. From the capture efficiency and the decay time, the minimum detectable flux intensity of a cold 87Rb atomic beam is estimated to be $2\times 10^{5}$ atom/cm2$\cdot$s. The atom-counting system is used for detection and evaluation of a cold atomic beam produced out of a near-field optical funnel.
- 2003-06-15
著者
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Ito Haruhiko
Interdisciplinary Graduate School Of Science And Engineering Tokyo Institute Of Technology
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Yamada Shungo
Interdisciplinary Graduate School Of Science And Engineering Tokyo Institute Of Technology
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Ohtsu Motoichi
Interdisciplinary Graduate School Of Science And Engineering Tokyo Institute Of Technology
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Takamizawa Akifumi
Interdisciplinary Graduate School Of Science And Engineering Tokyo Institute Of Technology
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Ohtsu Motoichi
Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259, Nagatsuta-cho, Midori-ku, Yokohama 226-8502, Japan
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Yamada Shungo
Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259, Nagatsuta-cho, Midori-ku, Yokohama 226-8502, Japan
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