Sziklas E A, Siegman A E
Appl Opt. 1975 Aug 1;14(8):1874-89. doi: 10.1364/AO.14.001874.
We present further calculations of the three-dimensional mode patterns and power outputs from a highpower gas-dynamic laser, including a nonuniform flowing, saturable gain medium plus index inhomogeneities (shocks) inside the laser. The calculations are carried out using a plane-wave or k-space expansion together with the fast Fourier transform. A new expanding-beam coordinate transform converts all diverging or converging sections of the resonator mode into equivalent collimated beam sections. The resulting FFT propagation code is significantly faster than earlier propagation codes using other eigenmode expansions.
我们给出了高功率气动激光器三维模式图案和功率输出的进一步计算结果，包括激光器内部不均匀流动、可饱和增益介质以及折射率不均匀性（激波）的情况。计算是使用平面波或k空间展开以及快速傅里叶变换进行的。一种新的扩展光束坐标变换将谐振器模式的所有发散或会聚部分转换为等效的准直光束部分。由此产生的快速傅里叶变换传播代码比使用其他本征模式展开的早期传播代码要快得多。
