LD抽运的Cr^(4+)∶YAG被动调QNd∶YAG激光器

Diode Pumped, Cr^(4+) ∶YAG passively Q-switched Nd∶YAG Laser

研究了不同谐振腔下不同透射率的Cr4 + ∶YAG调Q的激光输出特性。采用透射率为 82 %的Cr4 + ∶YAG ,在抽运功率 1 1W时 ,激光重复频率小于 3kHz,单脉冲能量达 2 0 μJ ,可以作为微脉冲激光雷达的发射光源。分析和比较了实验结果和理论计算 。

In order to look for a cheap compact laser source for a micro pulse lidar to remotely sense aerosol and cloud in the troposphere, the studies of diode pumped, Cr 4+ ∶YAG passively Q switched Nd∶YAG lasers were present. Using different laser cavities with different initial transmissions of Cr 4+ ∶YAG, the output properties of laser were demonstrated. The output energy of 20 μJ per pulse and the repetitive frequency of 2.8 kHz were generated by a LD with 1.1 W and a Cr 4+ ∶YAG crystal with an initial transmission of 82%, which it can match the requirement of micro pulse lidar. The measured CW output power and pulse repetitive frequency were consistent with the results of theoretic calculation well.