The crystalline morphology and lattice constants of silica bricks in several status were investigated by the optic microscope, scanning electron microscope and X-ray diffraction.

利用光学显微镜、扫描电镜和X射线衍射仪研究了几种不同状态硅砖的晶体形貌和晶格常数。

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This phenomenon can be explained by the diffraction effect of the Gaussian beam from the laser induced phase hole in the nonlinear medium caused by Kerr effect and thermo optic effect.

理论分析表明，该现象可以用光克尔效应和热光非线性效应共同作用下的附加相位孔对入射光束的衍射行为来解释。

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Calculating diffraction of light correctly is a most important content in the research of optic information processing.

正确计算光的衍射，是光信息处理研究中一个最重要的内容。

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