在matlab中调用数值求根函数对平面光导波的导模进行求解，并计算出导模中所对应的各参数。(In the MATLAB mode on the plane optical wave guide function calls for solving numerical roots, and calculate the parameters of the corresponding guide mode in the.)

参考各种文献以及实验条件，得到微晶片激光器的各物理参数，在matlab中编程求解该微晶片激光器对应的速率方程组。(Referring to various literatures and experimental conditions, we get the physical parameters of the microchip laser, and solve the rate equations of the microchip laser in MATLAB.)

功能为求解系数矩阵为三对角矩阵或者循环三对角矩阵的线性方程。 输入的四个参数均为行向量，分别对应系数矩阵的上副对角线，主对角线，下副对角线，以及方程等号另一侧的常数矩阵(The four parameters of the input are line vectors, which correspond to the upper diagonal lines of the coefficient matrix, the main diagonal line, the lower diagonal

从范德瓦尔斯方程出发，利用牛顿迭代法，求解对应材料的binomal线和binomal线，给出相应的相图，并作出对应的P-T图像。(Starting from the Van Der Waals equation, using the Newton iterative method, the binomal line and the binomal line of the corresponding materials are solved, and the corresponding phase