摘要
通过对硅酸镓镧(LGS)晶体旋光性与电光效应的交互作用的理论研究,推导出晶体旋光性和电光效应共同作用下的光强表示式I=1-4B2(Asin 2ω-Ccos 2ω)2。利用此表示式设计计算了旋光晶体LGS尺寸为8 mm×8 mm×25 mm电光Q开关在1064 nm波长使用时的开关电压和偏振角分别为4995 V和27.3°。将理论研究得到的结论应用于LGS晶体电光调Q的Nd∶YAG晶体激光器的实验研究中,实验结果与理论计算结果基本一致。得到输出能量为361 mJ,脉冲宽度为7.8 ns的脉冲激光输出。
The interaction between the optical rotation and electro-optic effect has been studied. The express equation of the emitted light intensity under the interaction of the optical rotation and electro-optic effect is given, which is I= 1 - 4B^2 （Asin 2ω Ccos 2ω）2. According to the theoretical equation, the shutdown voltage and polarization plane angle for a Q-switch of La3Ga5SiO14
（LGS） crystal with the size of 8 mm× 8 mm× 25 mm for the wavelength of 1064 nm are calculated to be 4995 V and 27.3°, which is validated by the experiment of a voltagedecreased electro-optical Q-switched Nd： YAG laser. The experimental results are in basic agreement with the calculation values. The output energy of 361 mJ and the pulse width of 7.8 ns are obtained.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2006年第5期689-692,共4页
Acta Optica Sinica
基金
光电信息技术科学教育部重点实验室(天津大学)开放课题
山东省科技创新基金资助课题
