中国物理B ›› 1996, Vol. 5 ›› Issue (7): 505-510.doi: 10.1088/1004-423X/5/7/004

• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇    下一篇

INFLUENCE OF DRIVING-FIELD PHASE FLUCTUATION ON ABSORPTION AND DISPERSION IN A SIMPLE THREE-LEVEL ATOMIC SYSTEM

龚尚庆, 徐至展, 腾华国   

  1. Shanghai Institute of Optics and Fine Mechanics, Academia Sinica, Shanghai 201800, China
  • 收稿日期:1995-08-23 出版日期:1996-07-20 发布日期:1996-07-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China.

INFLUENCE OF DRIVING-FIELD PHASE FLUCTUATION ON ABSORPTION AND DISPERSION IN A SIMPLE THREE-LEVEL ATOMIC SYSTEM

GONG SHANG-QING (龚尚庆), XU ZHI-ZHAN (徐至展), TENG HUA-GUO (腾华国)   

  1. Shanghai Institute of Optics and Fine Mechanics, Academia Sinica, Shanghai 201800, China
  • Received:1995-08-23 Online:1996-07-20 Published:1996-07-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China.

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摘要： The steady-state behavior of a simple three-level atomic system has been investi-gated by taking into account the effect of phase fluctuations in the driving field. For a monochromatic driving field, lasing with or without inversion can be established over a wide frequency range for the probe and driving fields. A large refractive index can also be generated even if the population inversion is positive. For a finite linewidth of the driving field, the refractive index enhancement tends to decrease. Furthermore, a behavior change from inversion laser to noninversion laser can occur as the driving field linewidth increases.

Abstract: The steady-state behavior of a simple three-level atomic system has been investi-gated by taking into account the effect of phase fluctuations in the driving field. For a monochromatic driving field, lasing with or without inversion can be established over a wide frequency range for the probe and driving fields. A large refractive index can also be generated even if the population inversion is positive. For a finite linewidth of the driving field, the refractive index enhancement tends to decrease. Furthermore, a behavior change from inversion laser to noninversion laser can occur as the driving field linewidth increases.

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

  • 32.80.Xx
42.50.Lc (Quantum fluctuations, quantum noise, and quantum jumps) 42.50.Gy (Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)