中国物理B ›› 1999, Vol. 8 ›› Issue (2): 143-149.doi: 10.1088/1004-423X/8/2/008

• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇    

LINEWIDTH REDUCTION IN AN INVERSIONLESS LASER WITH PUMP PHASE FLUCTUATIONS

胡响明, 彭金生   

  1. Department of Physics, Huazhong Normal University, Whuhan 430079, China
  • 收稿日期:1998-06-10 出版日期:1999-02-20 发布日期:1999-02-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 69708001 and 19774024) and the Natural Science Foundation of Hubei Province (Grant No. 97J013), China.

LINEWIDTH REDUCTION IN AN INVERSIONLESS LASER WITH PUMP PHASE FLUCTUATIONS

Hu Xiang-ming (胡响明), Peng Jin-sheng (彭金生)   

  1. Department of Physics, Huazhong Normal University, Whuhan 430079, China
  • Received:1998-06-10 Online:1999-02-20 Published:1999-02-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 69708001 and 19774024) and the Natural Science Foundation of Hubei Province (Grant No. 97J013), China.

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摘要： The effect of the pump phase diffusion on the linewidth of a laser without inversion is studied. It is shown that the linewidth at equal intensity may be reduced below that for a coherent driving, enen if the net effect of the pump bandwidth leads to an increase in the linewidth. The physical mechanism is analyzed in the dressed-state picture. Furthermore, the effects of the pump phase noise on the linewidths of an inversionleess laser and a Raman laser are compared with each other.

Abstract: The effect of the pump phase diffusion on the linewidth of a laser without inversion is studied. It is shown that the linewidth at equal intensity may be reduced below that for a coherent driving, enen if the net effect of the pump bandwidth leads to an increase in the linewidth. The physical mechanism is analyzed in the dressed-state picture. Furthermore, the effects of the pump phase noise on the linewidths of an inversionleess laser and a Raman laser are compared with each other.

中图分类号:  (Raman lasers)

  • 42.55.Ye
32.70.Jz (Line shapes, widths, and shifts) 32.80.Xx (Level crossing and optical pumping)