Sato A, Asai K, Itabe T
Appl Opt. 1998 Sep 20;37(27):6395-400. doi: 10.1364/ao.37.006395.
For a double-pass-pumped cw Tm:YAG laser, we developed a theoretical model, taking into account reabsorption loss and mode matching between the pumping light and the cavity mode. We also demonstrated that efficient operation can be obtained with a simple cavity configuration by using a dichroic output mirror, highly reflective at the pumping wavelength and partially reflective at the lasing wavelength. Experimental comparisons of this pumping method with single-pass pumping showed that the longitudinally double-pass-pumped Tm:YAG laser performs as well at room temperature as the single-pass-pumped laser performs at -10 degrees C.
对于双程泵浦连续波Tm:YAG激光器，我们建立了一个理论模型，该模型考虑了重吸收损耗以及泵浦光与腔模之间的模式匹配。我们还证明，通过使用在泵浦波长处高反射而在激光波长处部分反射的二向色性输出镜，采用简单的腔结构就能实现高效运转。这种泵浦方法与单程泵浦的实验比较表明，纵向双程泵浦的Tm:YAG激光器在室温下的性能与单程泵浦激光器在-10℃时的性能相当。
