中国物理B ›› 2006, Vol. 15 ›› Issue (7): 1497-1501.doi: 10.1088/1009-1963/15/7/020

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Coherent population transfer in Rydberg potassium atom by a single frequency-chirped laser pulse

张现周, 马巧枝, 李小红   

  1. Department of Physics, Henan Normal University, Xinxiang 453007,China
  • 收稿日期:2005-08-28 修回日期:2005-10-26 出版日期:2006-07-20 发布日期:2006-07-20
  • 基金资助:
    Project supported by the Natural Science Foundation of Henan Province, China (Grant No 0411011900).

Coherent population transfer in Rydberg potassium atom by a single frequency-chirped laser pulse

Zhang Xian-Zhou (张现周), Ma Qiao-Zhi (马巧枝), Li Xiao-Hong (李小红)   

  1. Department of Physics, Henan Normal University, Xinxiang 453007,China
  • Received:2005-08-28 Revised:2005-10-26 Online:2006-07-20 Published:2006-07-20
  • Supported by:
    Project supported by the Natural Science Foundation of Henan Province, China (Grant No 0411011900).

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摘要： By using the time-dependent multilevel approach, we have calculated the coherent population transfer among the quantum states of potassium atom by a single frequency-chirped laser pulse. The results show that the population can be efficiently transferred to a target state and be trapped there by using an `intuitive' or a `counter-intuitive' frequency sweep laser pulse in the case of `narrowband' frequency-chirped laser pulse. It is also found that a pair of sequential `broadband' frequency-chirped laser pulses can efficiently transfer population from one ground state of the \La atom to the other one.

关键词: frequency-chirped laser pulse, coherent population transfer

Abstract: By using the time-dependent multilevel approach, we have calculated the coherent population transfer among the quantum states of potassium atom by a single frequency-chirped laser pulse. The results show that the population can be efficiently transferred to a target state and be trapped there by using an `intuitive' or a `counter-intuitive' frequency sweep laser pulse in the case of `narrowband' frequency-chirped laser pulse. It is also found that a pair of sequential `broadband' frequency-chirped laser pulses can efficiently transfer population from one ground state of the $\varLambda$ atom to the other one.

Key words: frequency-chirped laser pulse, coherent population transfer

中图分类号:  (Photoionization and excitation)

  • 32.80.-t
31.15.-p (Calculations and mathematical techniques in atomic and molecular physics) 32.60.+i (Zeeman and Stark effects)