Optoelectronics Letters

, Volume 2, Issue 4, pp 320–322 | Cite as

Effects of spontaneously generally coherence on probe response in an open lambda type system

  • Tian Shu-fen 
  • Fan Xi-jun 
  • Bai Cheng-jie 
  • Hong Zheng-ping 
  • Xu Zhi-zhan 
Optical Physics


It is shown that in an open lambda type atomic system, the gain and dispersion of the probe field are quit sensitive to variation of spontaneously generally coherence (SGC). The value of the parameterp reflects whether SGC effect exists and the size of SGC effect. Under certain condition, whenp=0.002 electromagnetically induced transparency occurs; whenp≠0.002, lasing without inversion can be realized; whenp=0.95, high index of the refraction with zero absorption can be obtained.

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Copyright information

© Tianjin University of Technology 2006

Authors and Affiliations

  • Tian Shu-fen 
    • 1
  • Fan Xi-jun 
    • 2
  • Bai Cheng-jie 
    • 1
  • Hong Zheng-ping 
    • 2
  • Xu Zhi-zhan 
    • 3
  1. 1.Communication CollegeShandong Normal UniversityJinanChina
  2. 2.Physics DepartmentShandong Normal UniversityJinanChina
  3. 3.Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghaiChina

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