Wohlmuth M, Pflaum C, Altmann K, Paster M, Hahn C
Department of Computer Science and Erlangen Graduate School in Advanced Optical Technologies, Friedrich-Alexander University Erlangen-Nürnberg, Cauerstr. 6, D-91058 Erlangen, Germany.
Opt Express. 2009 Sep 28;17(20):17303-16. doi: 10.1364/OE.17.017303.
We derive a new model and simulation technique called "Dynamic Multimode Analysis (DMA)" to simulate the 3-dimensional dynamic behavior of a laser. A Gaussian mode analysis is used to obtain resonator eigenmodes taking into account thermal aberrations. These modes are coupled by a set of rate equations to describe the dynamic behavior of the individual modes for cw and Q-switched lasers. Our approach analyzes mode competition and provides a detailed description of the laser beam in terms of output power, beam quality factor M(2), and pulse shape. Comparison of experimental data with our simulation results provides new insight into the effect of mode competition and the operation of Q-switched lasers.
我们推导了一种名为“动态多模分析（DMA）”的新模型和模拟技术，以模拟激光器的三维动态行为。采用高斯模式分析来获得考虑热像差的谐振器本征模式。这些模式通过一组速率方程耦合，以描述连续波和调Q激光器中各个模式的动态行为。我们的方法分析模式竞争，并从输出功率、光束质量因子M²和脉冲形状方面对激光束进行详细描述。将实验数据与我们的模拟结果进行比较，为模式竞争的影响和调Q激光器的运行提供了新的见解。
