用传输矩阵法理论分析了在含热致双折射补偿和不含热致双折射补偿两种情况下,r偏振和Ф偏振对双棒串接激光器谐振腔稳区的影响.选用低掺杂浓度的Nd:YAG棒,实验上用含90°石英旋光片的双棒对称平行平面短腔获得了最佳实验结果.1064nm激光最高输出功率达482.3W,对应光-光转换效率为40.2%.
Using a ray matrix method, the influnces of r and θ polarization on the resonator stability condition of two laser heads in tandem with or without thermal birefringence compensation were theoretically analyzed. Optimal experimental result was obtained with a short plane-parallel resonator including two laser heads and with a 90° quartz rotator in between. 480 W laser output power was obtained with optical to optical efficiency of 40.2% for such a resonator.