中国物理B ›› 2007, Vol. 16 ›› Issue (7): 1947-1951.doi: 10.1088/1009-1963/16/7/023

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Numerical exploration of coherent excitation in three-level ladder systems

李小红1, 张现周2, 杨向东3   

  1. (1)College of Science, Henan University of Science and Technology, Luoyang 471003, China ；Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China; (2)Department of Physics, Henan Normal University, Xinxiang 453007, China; (3)Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
  • 收稿日期:2006-07-08 修回日期:2006-10-13 出版日期:2007-07-20 发布日期:2007-07-04
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10574096).

Numerical exploration of coherent excitation in three-level ladder systems

Zhang Xian-Zhou(张现周)a), Li Xiao-Hong(李小红)b)c) † , and Yang Xiang-Dong(杨向东)c)   

  1. a Department of Physics, Henan Normal University, Xinxiang 453007, China；b College of Science, Henan University of Science and Technology, Luoyang 471003, China; c Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
  • Received:2006-07-08 Revised:2006-10-13 Online:2007-07-20 Published:2007-07-04
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10574096).

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摘要： The technique of stimulated Raman adiabatic passage (STIRAP) is used to transfer potassium atoms from the 22p state to the 21p Rydberg state through the intermediate state 22s. The results show that complete population transfer is related to pulse duration and overlap, and occurs when the pulse duration and overlap have adequate values. At the same time, population trapping is also formed. Complete population transfer can also occurs when the two-photon resonance condition ({\it\Delta}s= {\it\Delta}p) is met.

关键词: STIRAP, coherent population transfer, pulse duration, overlap

Abstract: The technique of stimulated Raman adiabatic passage (STIRAP) is used to transfer potassium atoms from the 22p state to the 21p Rydberg state through the intermediate state 22s. The results show that complete population transfer is related to pulse duration and overlap, and occurs when the pulse duration and overlap have adequate values. At the same time, population trapping is also formed. Complete population transfer can also occurs when the two-photon resonance condition ($\varDelta$s= $\varDelta$p) is met.

Key words: STIRAP, coherent population transfer, pulse duration, overlap

中图分类号:  (Level crossing and optical pumping)

  • 32.80.Xx
31.15.-p (Calculations and mathematical techniques in atomic and molecular physics) 32.80.Rm (Multiphoton ionization and excitation to highly excited states)