双声光器件调制的同步性对Nd:YAG脉冲激光输出的影响  

Influence of the Synchronism About Two AO Q-switch on Pulse Nd:YAG Laser Output

作　　者：郑义军[1] 李强[1] 刘长娥[1] 左铁钏[1] 

机构地区：[1]北京工业大学国家产学研激光技术中心

出　　处：《光电子．激光》2004年第3期259-262,共4页Journal of Optoelectronics·Laser

基　　金：国防科工委重点实验室资助项目(OOJS50.1.2.QT0101);国家自然科学基金资助项目(10276003)

摘　　要：在脉冲Nd:YAG激光器的谐振腔内,用最大输出功率为120W的声光电源,同时驱动2个正交放置的器件,进行声光调制。实验研究了2个声光器件不同的开启时间对激光脉冲输出的影响。研究结果表明,双声光器件的开启时间的同步性对激光输出脉冲有较大的影响,当两器件开启时间差大于5ns时,声光器件不能对调制光进行有效关断;当两器件的开启时间大于18ns时,有效调制输出的激光脉冲能量下降了20%。A novel way to drive the double acousto-optic (AO) Q-switch in a pulse Nd:YAG laser was reported. AO Q-switch driver with 120 W output power was halved by a power distributor, and two branches were used to drive the double orthogonal AO-switches. The influence of the different opening time of two AO-switch on the laser pulse output was researched, the result indicates that synchronism of two AO Q-switch has much influence on the output of the laser pulse, When the difference of start times of two AO switches exceeds 5 ns, the laser won't be shut off effectively. If the difference is more than 18 ns, the pulse energy of laser output will drop about 20%.

关 键 词：双声光器件 同步性 ND:YAG脉冲激光器 声光调制 双声光技术 

分 类 号：TN248.13[电子电信—物理电子学]