Electrical polarizing method is the most easy and effective way, which can get ferroelectric domain on non-linear crystal, in all methods of QPM technology.
而通过外加电场极化的方法，获得非线性晶体铁电畴反转光栅，是目前普遍采用，且被证明非常有效的方法。
2
The photonic properties of a two-dimensional complex photonic crystal (PC) of square lattice were calculated by finite different time domain (FDTD) method.
用FDTD方法计算了二维正方形复式晶胞光子晶体的光子特性。
3
The high molding distortion magnesium alloy with the autogeny allowing the crystal wnganced belongs to the metal technical domain.