单模激光线性模型初态的随机共振

根据线性化的单模激光输出光强方程,运用计算光强的相关函数,得到光强的功率谱及信噪比的方法,对δ函数形式关联的两白噪声驱动的单模激光线性模型瞬态随机共振进行了研究,具体计算了瞬态的第一个周期的功率谱及信噪比,发现在一定的条件下也可出现随机共振,并和定态的随机共振进行了比较．     

统一展开理论应用于激光系统中的精度问题

通过提高推导过程中精度的办法得到了更完善的统一展开理论（ＵＥＴ），且用更完善的ＵＥＴ具体计算了单模染料激光色损失模型的光强定态几率分布，得到了与实验结果符合得更好的理论结果     

环型激光器双模激光方程的推导和噪声分析

研究了固体介质环型激光器中两束沿相反方向平行传播的双模激光，获得了双模激光场的一个不同于通常立方模型的新Ｌａｎｇｅｖｉｎ方程，并利用Ｌａｍｂ量子库理论，对该系统中各个系数、各种噪声的来源及噪声之间的关系进行了讨论。     

Stochastic Multiresonance for Periodically Modulated Noise in a Single—Mode Laser

Multiplicatively introducing the noise and the signM into the gain-noise model of a single-mode laser system, we detect the two forms of stochastic resonance (the single-peak form stochastic resonance and stochastic multiresonance) in the curve of the dependence of signal-to-noise ratio upon the noise correlation time. Moreover, when the correlation coefficient and the intensities of both noises are changed, the two forms of stochastic resonance alternate.     

关于系统绝热近似

根据算符的微分性质和分部积分法分别讨论了绝热近似下的形式消去公式,然后用迭代法得出快变量的表达式,继而用一个非线性随机微分系统为例子来说明迭代法的原理和应用方法,最后利用直接求解法处理在乘法噪声驱动下的线性随机微分系统,得到了其绝热近似下的快变量表达式.     

单模激光系统线性化近似适用范围的分析

采用线性化近似方法计算了具有实虚部关联的量子噪声和泵噪声驱动的单模激光损失模型的光强相对涨落,为了对线性化近似的适用范围进行详细的分析,分别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,线性化近似适用范围极大的结论.     

Stochastic resonance in a gain--noise model of a single-mode laser driven by pump noise and quantum noise with cross-correlation between real and imaginary parts under direct signal modulation

Stochastic resonance (SR) is studied in a gain--noise model of a single-mode laser driven by a coloured pump noise and a quantum noise with cross-correlation between real and imaginary parts under a direct signal modulation. By using a linear approximation method, we find that the SR appears during the variation of signal-to-noise ratio (SNR) separately with the pump noise self-correlation time \tau , the noise correlation coefficient between the real part and the imaginary part of the quantum noise \lambda_q , the attenuation coefficient \gamma and the deterministic steady-state intensity I_0 . In addition, it is found that the SR can be characterized not only by the dependence of SNR on the noise variables of \tau and \lambda_q, but also by the dependence of SNR on the laser system variables of \gamma and I₀. Thus our investigation extends the characteristic quantity of SR proposed before.     

关联噪声驱动系统的随机动力学

用一种新变换方法将关联噪声化为两个随机等价的独立噪声，从而可以使用各种原来处理两相独立噪声的随机动力学方法．对关联白噪声和关联Ｏ－Ｕ噪声驱动系统分别建立了福克－普朗克方程，并举例解出定态几率分布．     

确定论系统快弛豫变量的精确消去和绝热近似

本文导出了确定论系统快弛豫变量的精确消去公式,其递推关系为.所得到的递推关系具有计算方便、能用于非自治系统和能清楚分出绝热贡献和非绝热贡献等优点.