运用线性化近似方法计算泵噪声和实虚部间关联的量子噪声驱动的单模激光系统输入信号后的稳态平均光强关联函数和稳态平均光强相对涨落,对所用线性化近似方法的适用范围进行了详细分析,具体讨论了量子噪声实虚部间关联系数、量子噪声强度、泵噪声强度、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、远离阈值、信号强度不大和频率较高的条件下,线性化近似有较高精度.
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