论文部分内容阅读
本文叙述对LiTaO_3晶体观察到的光散射现象和在0.4μm～50μm波段对该晶体作的透射率的测量。观察了我们拉制的LiTaO_3晶体在不同的温度和电场作用下,当He—Ne激光(λ=0.633μm)通过它时所产生的光散射现象,观察结果表明:“散射中心是大小与光波波长同一个数量级的微铁电畴”这一结论是正确的。可利用这一散射现象直观地检验晶体极化处理的程度。同时,测量了晶体在退火前后、极化前后的透射率;并对这三种情况作了比较。
This article describes the light scattering phenomena observed for LiTaO_3 crystals and the measurement of the transmittance of this crystal in the 0.4 μm to 50 μm band. We observe the light scattering phenomenon of the LiTaO_3 crystal under different temperature and electric field under the action of He-Ne laser (λ = 0.633μm). The observation results show that “the scattering center is the size and wavelength of light The same order of magnitude of micro-Ferroelectric domain ”This conclusion is correct. This scattering phenomenon can be used to visually test the degree of crystal polarization. At the same time, the transmissivity of the crystal before and after annealing, before and after the polarization was measured. The three cases were compared.