photon density meaning in English
光子密度
Examples
- This system employed diffuse photon density wave ( dpdw ) to detect the heterogeneities in biological tissues , and the rows of its laser sources and detectors were placed in a special way which made it possible to employ a simple algorithm for three - dimensional localization of heterogeneities
该系统利用射频光子密度波来探测生物组织内部的异物，采用特殊的光源和接收器排列以应用简单的算法进行异物的3维定位。 - In this paper the average field is used to describe the carrier in each segment based on the carrier distribution in two - segment dfb lasers and the strict coupled wave theory is used to describe the photon density . combined with these two methods , the threshold condition expression has been derived for the first time
基于两段式dfb激光器中的载流子分布事实，本文对每一段内的载流子浓度用平均场方法处理；对于激光器内的光场分布则应用严格的耦合波理论进行研究，通过将这两种方法有机结合，首次导出了两段式dfb激光器的阈值条件表达式。 - The relaxation oscillation in solid - state laser with relaxation oscillation pumping is studied theoretically by the rate equation . the undulation of the laser photon density contains relaxation oscillation frequency itself and that of pumping . when those two frequencies are close , the oscillation will be resonated
我们用速率方程小信号近似方法对泵浦带有弛豫振荡的固体激光器的弛豫振荡的特性进行了系统的理论研究，发现实际光子数的起伏同时具有自身固有的弛豫振荡频率和泵浦光的弛豫振荡频率两种分量。 - The analyses given in this paper to quasi - three - level for 946 nm laser are complete . the relation between 946 nm laser transmission and optimal crystal length has been derived from the rate equations describing the population inversion and the photon density in the laser cavity in the steady - state case . the minimal claims to coating have been given on the base of contrasting 946 nm transmission with 1064 nm transmission in the condition of different cavity losses and how the pump beam radius in the laser crystal and optimal crystal length affect the laser threshold and output power of 946 nm laser has been given as well
对产生946nm谱线的准三能级结构给出了较为完整的分析，利用激光谐振腔处于稳态时的速率方程，导出了准三能级nd ： yag946nm起振时，透射损耗与最佳激光晶体长度的关系，在与1064nm透射损耗相比较的基础上，给出了不同的腔损耗情况下的最低镀膜要求，并且给出了激光阈值、输出功率和最佳激光晶体长度及泵光光斑大小的关系，这为设计室温下高效运转的946nm激光器的提供了理论基础，这种分析方法对研究此类低增益，准三能级或三能级激光系统输出特性有借鉴意义。 - The intracavity photon density and initial population inversion density are assumed to be gaussian distributions instead of plan wave assumption , based on this assumption , the rate equations of diode - pumped intracavity - frequency - doubled passively q - switched laser are modified . through solving these space - dependent rate equations numerically , the results under different assumption are compared . 5
将腔内光子密度和初始反转粒子数的平面波近似修正为高斯分布近似，独立地导出描述二极管泵浦内腔倍频-被动调q激光器的速率方程，并通过数值求解该方程比较了两种近似下脉冲特性的不同； 5 .实验验证了2中提出的实验方案，并对实验结果进行了分析。