节点文献

离轴切割Nd:YVO₄晶体的激光特性

Characteristics of Off-Axially Cut Nd:YVO₄ Crystal for Laser

推荐 CAJ下载
PDF下载
不支持迅雷等下载工具，请取消加速工具后下载。

【Author】 CHEN Hao~1,YAN Chang-chun~1,WANG Zhan-xin~1,ZENG He-ping~2()~1Department of Physics,Xuzhou Normal University,Xuzhou,Jiangsu 221000,China()~2Key Laboratory of Optics and Magnetic Resonance Spectroscopy of Ministry of Education,East China Normal University,Shanghai 200062,China

【机构】徐州师范大学物理系；华东师范大学光谱学与波谱学教育部重点实验室江苏徐州221000；江苏徐州221000；上海200062；

【摘要】通过比较a切,45°切割Nd∶YVO4晶体连续(CW)和以Cr4+∶YAG晶体为被动调Q器件激光器的输出特征,发现Nd∶YVO4晶体在激光器中既作为增益介质,又作为双折射o光,e光分裂器件。在不同的运转条件下,o光,e光偏振模式相互竞争,导致离轴晶体在连续运转时表现出a切晶体的特征,有较小的阈值、光-光转换效率高;在被动调Q运转时,则表现出c切晶体的特征,在1340 mW的激光二极管(LD)抽运功率下,可以获得峰值功率0.6 kW,重复频率为18.7 kHz,脉宽为6.5 ns的脉冲。更多还原

【Abstract】 The characteristics of 45°-off-axially-cut and a-cut Nd∶YVO₄ crystal,were compared for continuous wave（CW） and passively Q-switching operations by Cr⁴⁺∶YAG crystal as the intracavity saturable absorber.By analyzing the experimental results,the 45°-off-axially-cut Nd∶YVO₄ exhibited parts of properties of the a-cut and c-cut crystals for CW passively Q-switching operations respectively,due to the competition between π polarization and σ polarization simulated emissions.With the laser diode（LD）-pump power of（1340 mW,） a peak power of（0.6-kW） with a（6.5-ns） pulse width and（18.7-kHz） repetition rate was obtained.更多还原