【摘要】 本文测定了紫外、可见光区新型压电晶体—Sr3NbGa3Si2O14(SNGS)的透过率,并利用一种新方法即通过测量晶体在平行偏振系统中的透过率谱研究了其旋光性,且拟合出旋光色散曲线。此晶体属左旋单轴晶体,旋光非常大,其旋光率ρ在513nm处达到43.69°/mm。更多还原

【Abstract】 This paper measured the transmittance spectrum of Sr₃NbGa₃Si₂O₁₄（SNGS）,a new kind of piezoelectric single crystal,from ultra-violet to visible wavelength and studied its optical activity by a novel method—measuring the transmittance spectra in Z-direction between parallel polarisers. And the rotation dispersion was fitted. The results showed that SNGS crystal belongs to left-handed uniaxial crystal and has quite large optical activity. The specific rotation at 513nm can be up to 43.69°/mm.更多还原