单模激光系统输入信号后的稳态平均光强相对涨落

研究了具有实虚部间关联的量子噪声和抽运噪声驱动的单模激光系统输入信号后的统计性质，采用线性化近似方法计算了系统的稳态平均光强相对涨落，分析了量子噪声实虚部间关联系数、量子噪声强度、抽运噪声强度、输入信号振幅和频率、净增益等对稳态平均光强相对涨落的影响，发现在量子噪声实虚部间弱关联、小噪声、远离阚值、信号振幅不大和频率较高的条件下激光场的统计涨落较小。

The Steady-State Mean Normalized Intensity Fluctuation in a Single-Mode Laser

Using the linear approximation method, the steady state mean normalized intensity fluctuation is calculated after input signal in a single mode laser system driven by pump noise and quantum noise with cross correlation between the real and imaginary parts. The influences on the steady state mean normalized intensity fluctuation are analyzed by quantum noise with cross correlation coefficient between the real and imaginary parts, the intensities of the quantum and pump noise, the amplitude and frequency of input signal and the net gain. It is found that the statistic fluctuation of laser field is smaller in the case of the weaker quantum noise cross correlation between the real and imaginary parts, smaller noises, far from threshold, smaller amplitude and higher frequency of the signal.