Considering the effect of walk-off Angle, the accurate calculation of effective nonlinear optical coefficient of uniaxialcrystal is presented, a example of calculation of BBO is given.
考虑到离散角的影响，给出了单轴晶体中有效非线性极化系数的精确计算公式，并给出了计算举例。
2
It indicates that the direction of ray axis and optical axis is identical by discussing the uniaxialcrystal at last.
最后对一轴晶进行了讨论，结果表明此时光轴方向与光线轴方向一致。
3
The second order nonlinear optical effects on the three-wave is analyzed, and the nonlinear optical coefficient of the uniaxialcrystal is deduced from an example of the BBO.