Journal of the Optical Society of Korea

  • 제13권2호
  • /
  • Pages.223-226
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  • 2009
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  • 1226-4776(pISSN)
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  • 2093-6885(eISSN)
한국광학회 (Optical Society of Korea)
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A Magneto-optical Trap Below a Dielectric Coated Mirror Surface

  • Yu, Hoon (Department of Physics Education, Korea National University of Education) ;
  • Lee, Lim (Department of Physics Education, Korea National University of Education) ;
  • Lee, Kyung-Hyun (Department of Physics Education, Korea National University of Education) ;
  • Kim, Jung-Bog (Department of Physics Education, Korea National University of Education)
  • 투고 : 2008.02.05
  • 심사 : 2008.04.30
  • 발행 : 2009.06.25
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초록

A Magneto-Optical Trap (MOT) for $^{87}Rb$ atoms near the surface of a dielectric coated mirror at the top of a small $20{\times}25{\times}40\;mm^3$ cell has been observed. Two beams of $3.3\;mW/cm^2$ were used for optical cooling and an anti-Helmholtz magnetic field with a spatial gradient of 9.1 G/cm was used for magnetic trapping. The thickness of the mirror coated on a cover glass was less than $100{\mu}m$. The mirror covered the top of a cell and the atom-chip was located outside the vacuum in order to exploit the long life time of the mirror and easy operation of the chip. The trapping position was found 5 mm beneath the mirror surface. The number of trapped atoms was roughly $3{\times}10^7$ atoms and the temperature was approximately a few tens mK. In this paper, we describe the construction of the mirror-MOT in detail.

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참고문헌

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