光波在光晶体中传播时，当光波的两个垂直分量Ex’，Ey‘的光程差为半个波长时（对应的相位差为180度）所需要加的电压，称为半波电压。 主要由光波长，0光折射率n，光电系数r63共同决定。
It is for DKDP Crystal's lognitudinal electrooptics effect and half-wave voltage unchangeable that it can be used as Q switch.
DKDP晶体作为调Q器件,利用的是它的纵向电光效应,其半波电压不可调。
参考来源 - 激光器DKDP开关晶体电光性能的研究报告·2,447,543篇论文数据，部分数据来源于NoteExpress
由此导出了半波电压随外界磁场变化的数学模型。
The maths model about the variance that the half-wave voltage varies with the magnetic induction outside is set up.
这种装置具有半波电压低，电反馈功率小等特点。
This device base such advantages that the half-wave voltage is lower and the electric feedback power is smaller.
文中还阐明了这种包层调制有助于降低器件的半波电压。
In the thesis it is also illustrated that the way of modulation in claddings helps to decrease the half-wave voltage of modulators.
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