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设计了半导体激光器双端面抽运的种子注入Nd:YAG绿光激光器。通过优化谐振腔结构参数设计,实现增益介质激活区域与基横模体积的良好匹配,获得稳定的基横模输出。48h连续运转,输出的脉冲能量不稳定度小于2.9%,并确保单频输出。在传导冷却结构中,实现了高光束质量、高重复频率、窄脉冲宽度且可调谐的532nm单频绿光的稳定输出。在重复频率为1kHz时,最大输出脉冲能量大于4mJ,脉冲宽度约为6.5ns。激光束在水平方向和垂直方向的光束质量M2值分别是1.166和1.158。输出单频绿光激光的连续调谐范围可达到15GHz。
A double-end pumped Nd: YAG green laser was designed. By optimizing the structural parameters of the resonator, a good match between the gain medium activation region and the fundamental transverse mode volume is achieved, and a stable basic transverse mode output is obtained. 48h continuous operation, the output pulse energy instability of less than 2.9%, and to ensure single-frequency output. In a conductive cooling structure, a stable output of tunable 532nm single-frequency green light with high beam quality, high repetition rate, narrow pulse width, is achieved. When the repetition frequency is 1kHz, the maximum output pulse energy is more than 4mJ and the pulse width is about 6.5ns. The beam qualities M2 of the laser beam in the horizontal and vertical directions are 1.166 and 1.158, respectively. Output single-frequency green laser continuous tuning range up to 15GHz.