中国物理B ›› 1998, Vol. 7 ›› Issue (12): 886-897.doi: 10.1088/1004-423X/7/12/002

• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇    下一篇

DYNAMIC QUANTUM NOISE REDUCTION IN A CASCADE LASER WITH AND WITHOUT INVERSION

胡响明, 彭金生   

  1. Department of Physics, Huazhong Normal University, Wuhan 430079, China
  • 收稿日期:1998-04-09 修回日期:1998-08-13 出版日期:1998-12-20 发布日期:1998-12-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No.59708001) and by the Natural Science Foundation of Hubei Province (Grant No.97J013), China.

DYNAMIC QUANTUM NOISE REDUCTION IN A CASCADE LASER WITH AND WITHOUT INVERSION

HU XIANG-MING (胡响明), PENG JIN-SHENG (彭金生)   

  1. Department of Physics, Huazhong Normal University, Wuhan 430079, China
  • Received:1998-04-09 Revised:1998-08-13 Online:1998-12-20 Published:1998-12-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No.59708001) and by the Natural Science Foundation of Hubei Province (Grant No.97J013), China.

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摘要： In this paper we investigate the effect of two incoherent steps on the statistical properties of cascade lasers without and with inversion. It is demonstrated that the noise in the intensity difference may be reduced 50% below the shot noise. A simple physical explanation of the mechanism for squeezing is given.

Abstract: In this paper we investigate the effect of two incoherent steps on the statistical properties of cascade lasers without and with inversion. It is demonstrated that the noise in the intensity difference may be reduced 50% below the shot noise. A simple physical explanation of the mechanism for squeezing is given.

中图分类号:  (Quantum fluctuations, quantum noise, and quantum jumps)

  • 42.50.Lc
42.50.Dv (Quantum state engineering and measurements) 03.65.-w (Quantum mechanics)