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Chinese Physics, 2007, Vol. 16(7): 1947-1951    DOI: 10.1088/1009-1963/16/7/023

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)
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
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.
Keywords:  STIRAP      coherent population transfer      pulse duration      overlap  
Received:  08 July 2006      Revised:  13 October 2006      Accepted manuscript online: 
PACS:  32.80.Xx (Level crossing and optical pumping)  
  31.15.-p (Calculations and mathematical techniques in atomic and molecular physics)  
  32.80.Rm (Multiphoton ionization and excitation to highly excited states)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No 10574096).

Cite this article: 

Zhang Xian-Zhou(张现周), Li Xiao-Hong(李小红), and Yang Xiang-Dong(杨向东) Numerical exploration of coherent excitation in three-level ladder systems 2007 Chinese Physics 16 1947

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