实虚部间关联的量子噪声和泵噪声对光强相对涨落的影响

采用具有实虚部关联的量子噪声和泵噪声驱动的单模激光白损失模型,用线性化近似方法计算了光强关联函数和光强的相对涨落,并用解析方法对线性化近似方法的适用范围进行了详细的分析,讨论了量子噪声强度、泵噪声强度、量子噪声实虚部间关联系数对光强相对涨落的影响,得出在小噪声、远离阈值时,线性化近似适用范围扩大;小噪声、远离阈值且当量子噪声实虚部无关联时,线性化近似方法适用范围最大的结论.

EFFECT OF PUMP NOISE AND QUANTUM NOISE WITH REAL AND IMAGINARY PARTS ON THE VARIANCE OF THE LASER INTENSITY

Adopting the linear approximation method, a loss model of a single-mode laser driven by pump noise and whose real and imaginary parts are correlated is studied.The intensity correlation function and variance of the laser intensity.is investigated Moreover, the valid range for the linear approximation method is obtained, and effect of the intensities of the pump noise and quantum noise on the variance of the laser intensity, and the correlation coefficient between the real and imaginary parts of the quantum noise,are discussed in detail.It is conduded that, the valid range is extended in the case of small quantum noise and far form threshold, and the valid range is the largest in case of small quantum noise, far form threshold ,and no correlation between the real and imaginary parts of the quantum noise.