Artificial birefringence introduced by porosity in GaP

Artificial birefringence introduced by porosity in GaP
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GaP 中的孔隙率引入人工双折射

DOI：
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发表时间：
2005
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影响因子：
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通讯作者：
R. Boyd
R. Boyd
中科院分区：
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文献类型：
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作者：
V. Ursaki;N. Syrbu;S. Albu;V. Zalamai;I. Tiginyanu;R. Boyd

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基于对非偏振和偏振透射谱的拍频以及光谱的角度依赖关系的分析，研究了间隙膜中孔隙率引起的双折射。在多孔间隙膜中测得的双折射高达Ne、−、NO=0.25，孔隙度接近40%。对于具有合适形貌的间隙膜，将Ne和NO的实测值与在有效介质理论框架下的计算值进行了比较。
Porosity-induced birefringence in a GaP membrane is studied using a method based on the analysis of beats in unpolarized and polarized transmittance spectra as well as in angular dependence of optical spectra. Birefringence as high as ne − no = 0.25 was measured in a porous GaP membrane with the degree of porosity close to 40%. The measured values of ne and no are compared with those calculated in the frame of effective medium theory for a GaP membrane with appropriate morphology.