周期信号调制色泵噪音驱动下单模激光的稳态平均光强相对涨落

摘要

研究了周期信号调制噪音驱动下单模激光系统的统计性质，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C（0），分析了色泵噪音强度P、量子噪音强度Q、色泵噪音自关联时间τ、输入信号振幅B和频率Ω等对稳态平均光强相对涨落的影响。结果表明， C（0）随 P、Q 和 B 单调上升，随Ω单调下降。在色泵噪音自关联时间长、小噪音、信号振幅不大和频率较高的条件下稳态平均光强相对涨落较小。%Using the linear approximation method , the steady -state mean normalized intensity fluctuation C (0) was calculated after input signal in a single -mode laser system driven by color -pump noise and quan-tum noise.The influences on the steady -state mean normalized intensity fluctuation were analyzed by color-pump noise self-correlation time τ,the intensities of the quantum noises Q and pump noises P,the ampli-tude B and frequency Ωof input signal.It was found that,C(0) ascended monotonously with P,Q and B, while C(0) descended monotonously with Ω.the statistic fluctuation of laser field is smaller in the case of the longer color-pump noise self -correlation time,smaller noises,smaller amplitude and higher frequency of the signal.