单个激光二极管对称侧向抽运的固体激光器

采用一种半导体激光器侧向抽运的固体激光器新结构，可将一个半导体激光器的输出光分成四部分，从四面对称耦合到激光棒中，从而实现比较均匀的抽运。模拟计算了这种对称抽运结构中激光棒对侧面抽运光的吸收过程，得到了激光棒介质的吸收系数和直径等参量对激光棒内抽运光能量分布均匀性和能量吸收率的影响规律，并在此基础上对相关参量进行了优化。这种方案结构简单紧凑，很容易获得高光束质量的高功率固体激光输出。采用这种抽运结构制成了新颖的激光头，初步实验结果良好，表明该结构确实可行。

Symmetrically Side-Pumped Solid-State Laser with Single Diode Laser

A new configuration of laser diode side-pumped solid-state laser is put forward. The pumping configuration divides the pumping beam of one laser diode bar into four equal portions and produces a symmetric pumping the laser medium. A ray trace simulation of the pumping beam absorption in the rod medium is made, and the effect of the absorption coefficient and laser rod diameter on the uniformity of the absorbed pumping energy distribution and the energy absorption ratio is got. An optimization of proper parameters also is made. The configuration is simple, it is very easy to obtain high beam quality output laser beam with it. A novel laser head is made with this configuration, and the initial experimental results are fairly good, which show the feasibility of this configuration.