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.
Received: 10 June 1998
Accepted manuscript online:
Fund: 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.
Cite this article:
Hu Xiang-ming (胡响明), Peng Jin-sheng (彭金生) LINEWIDTH REDUCTION IN AN INVERSIONLESS LASER WITH PUMP PHASE FLUCTUATIONS 1999 Acta Physica Sinica (Overseas Edition) 8 143
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