We analyse a method of high repetition rate, efficient terahertz wave difference frequency generation (DFG) by using a self-Raman Nd-doped vanadate laser to pump 4’-dimethylamino-N-methyl-4-stilbazolium tosylate (DAST). A semi-analytical model is introduced that combines the rate equations (for the self-Raman dual-wavelength laser) and the coupled-wave equations (for the DAST-based DFG). Calculations were performed on a diffusion-bonded Nd:YVO4-YVO4 laser with an acousto-optic Q-switch. Parameters (including transmittances at output mirror and crystal lengths) were optimized to obtain high output. Sub-milliwatt average power is predicted under current pump condition.

中文翻译：

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自拉曼掺钕钒酸盐激光器：一种基于有机晶体差频产生的泵浦源

我们通过使用自拉曼掺钕钒酸盐激光器泵浦 4'-二甲氨基-N-甲基-4-甲苯磺酸鎓（DAST），分析了一种高重复率、高效太赫兹波差频生成（DFG）的方法。引入了一个半解析模型，该模型结合了速率方程（对于自拉曼双波长激光器）和耦合波方程（对于基于 DAST 的 DFG）。计算是在带有声光 Q 开关的扩散键合 Nd:YVO4-YVO4 激光器上进行的。优化参数（包括输出镜和晶体长度的透射率）以获得高输出。在当前泵条件下预测亚毫瓦平均功率。