中国物理B ›› 1999, Vol. 8 ›› Issue (8): 571-576.doi: 10.1088/1004-423X/8/8/003

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PHOTON STATISTICS OF THE MICROMASER WITH ULTRA COLD Λ-TYPE THREE-LEVEL ATOMS

李先锋1, 张智明2, 周士康3   

  1. (1)Department of Applied Physics,Shanghai Jiao Tong University,Shanghai 200030,China; (2)Department of Applied Physics,Shanghai Jiao Tong University,Shanghai 200030,China;Laser Spectroscopy Laboratory,Anhui Institute of Optics and Fine Mechanics,Chinese; (3)Laser Spectroscopy Laboratory,Anhui Institute of Optics and Fine Mechanics,Chinese
  • 收稿日期:1998-11-17 修回日期:1999-02-17 出版日期:1999-08-15 发布日期:1999-08-20
  • 基金资助:
    Project supported by the Senior Visiting Scholar Project of the Chinese Academy of Sciences

PHOTON STATISTICS OF THE MICROMASER WITH ULTRA COLD Λ-TYPE THREE-LEVEL ATOMS

ZHANG　ZHI－MING (张智明)ab, LI　XIAN－FENG (李先锋)a, ZHOU　SHI－KANG (周士康)b   

  1. a Department of Applied Physics,Shanghai Jiao Tong University,Shanghai 200030,China;  b Laser Spectroacopy Laboratory, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, 230031, China
  • Received:1998-11-17 Revised:1999-02-17 Online:1999-08-15 Published:1999-08-20
  • Supported by:
    Project supported by the Senior Visiting Scholar Project of the Chinese Academy of Sciences

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摘要： We have established the master equation for the micromaser with the ultra-cold Λ-type three-level atoms and studied the photon statistics of the micromaser field. We find that as the atoms become colder,the change of the mean photon-number and the normalized standerd deviation become more regular, and their resonance peaks become sharper. For zero-temperature cavity,there are some regins in which the photon statistics are sub-Poissonian.With the increase of the cavity temperature,both the mean photon-number and the normalized standard deviation increase. When the cavity temperature is high enough, the sub-Poissonian property may disappear.

Abstract: We have established the master equation for the micromaser with the ultra-cold $\varLambda$-type three-level atoms and studied the photon statistics of the micromaser field. We find that as the atoms become colder,the change of the mean photon-number and the normalized standerd deviation become more regular, and their resonance peaks become sharper. For zero-temperature cavity,there are some regins in which the photon statistics are sub-Poissonian.With the increase of the cavity temperature,both the mean photon-number and the normalized standard deviation increase. When the cavity temperature is high enough, the sub-Poissonian property may disappear.

中图分类号:  (Atom cooling methods)

  • 37.10.De
42.50.Pq (Cavity quantum electrodynamics; micromasers) 31.15.-p (Calculations and mathematical techniques in atomic and molecular physics)