光能量密度 meaning in Chinese

optical energy density

This thesis was divided into eight chapters , and the main results and innovations obtained here can be summarized as follows : ( 1 ) the physics model of tsrs in frequency conversion crystals has been built up firstly . based on quantum - mechanical viewpoints and the following physical processes and parameters : the two - photo interaction of light with matter , paraxial diffraction of stokes , langevin noise sources , reflection at the faces and the edges of crystals , gain coefficient , beam aperture , pulse width and fluence of 3 , the physics model of tsrs in kdp and kdp crystals acting as high - fluence frequency convector and the paraxial operator maxwell - bloch - langevin equations have been built up
全文共分八章，取得的主要成果及创新点如下： ( 1 )首次建立了谐波转换晶体的tsrs物理模型本文根据量子力学原理，在考虑如下物理过程和参量的基础上：光与物质的双光子相互作用； stokes光的傍轴衍射； langevin (郎兹万)噪声源；晶体表面反射和端面反射；增益系数、光束口径、脉宽和三倍频光能量密度，推导出高通量激光在kdp和kd ~ * p谐波转换晶体中的tsrs物理模型和空间上的近轴算符maxwell - bloch - langevin方程组。