紧凑高效吉赫兹1.34 μm Nd∶GdVO4/V∶YAG调Q锁模激光器

提出了一种紧凑高效的吉赫兹(GHz)1.34 μm Nd∶GdVO4/V∶YAG调Q锁模激光器。采用激光二极管进行端面抽运，将紧凑线性腔结构与透过率为10%的输出耦合镜相结合。优化了激光晶体的相关实验条件，理论分析了激光晶体的相关特性。实验中使用了Nd∶GdVO4晶体，Nd3+离子掺杂质量分数为0.2%，V∶YAG晶体的初始透过率为83%。利用该晶体实现了重复频率高达2 GHz的锁模脉冲，所得锁模调制深度接近100%，调Q锁模激光器的最大输出功率可达715 mW。基于波动机制理论，模拟了单个调Q包络下的锁模脉冲图形,所得理论结果与实验结果相符。

Abstract

A compact and efficient GHz Nd∶GdVO4/V∶YAG Q-switched mode-locked laser at 1.34 μm is proposed. A laser diode is used for end-pumping, and a compact and linear cavity is combined with an output coupler with transmittance of 10%. Correlation experimental conditions of laser crystal are optimized, and correlation properties of laser crystal are theoretical analyzed. A Nd∶GdVO4 crystal is used in experiment. The Nd3+ doping mass concentration is 0.2%, and the initial transmission of V∶YAG crystal is 83%. The repetition rate of mode-locked pulse is up to 2 GHz, and nearly 100% mode-locked modulation depth can be obtained. The maximum output power of the Q-switched mode-locked laser is 715 mW. Based on the fluctuation mechanism theory, a mode-locked pulse figure of single Q-switched envelope is simulated, and the simulation results agree well with the experimental results.

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曹秋园, 彭继迎, 李祚涵, 韩鸣. 紧凑高效吉赫兹1.34 μm Nd∶GdVO4/V∶YAG调Q锁模激光器[J]. 激光与光电子学进展, 2017, 54(6): 061407. Cao Qiuyuan, Peng Jiying, Li Zuohan, Han Ming. Compact and Efficient GHz Nd∶GdVO4/V∶YAG Q-Switched Mode-Locked Laser at 1.34 μm[J]. Laser & Optoelectronics Progress, 2017, 54(6): 061407.

紧凑高效吉赫兹1.34 μm Nd∶GdVO4/V∶YAG调Q锁模激光器

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