Light transmission in porous silicon dioxide filled with liquids of different refractive indices

作     者：李俊 张心正 石凡 徐燕 王丕东 禹宣伊 许京军 

作者机构：The MOE Key Laboratory of Weak Light Nonlinear Photonics TEDA Applied Physics School and School of Physics Nankai University 

出 版 物：《Chinese Optics Letters》 (中国光学快报（英文版）)

年 卷 期：2011年第9卷第6期

页      面：94-96页

核心收录：

学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China (Nos. 10874093 and 10804055) the National "973" Program of China (Nos. 2007CB307002, 2010CB934101, and 2010CB933801) the "111"Project of China (No. B07013) the Program for New Century Excellent Talents in University of China 

主　　题：Light refraction Porous materials Porous silicon Refractive index Refractometers Silica 

摘      要：Optical transmission at 532 nm from nonabsorbing disordered porous silicon dioxide has been studied experimentally. The transmission behaviors can be adjusted by filling the pores with liquids of different refractive indics, which are analyzed based on the theory of diffusion in a weak scattering regime. In our experiment, the transmission coefficient changes from a value less than 1% to one that is greater than 75%, that is, the opaque sample becomes transparent, which means that the transport mean free path of light within the material has been effectively adjusted. In addition, this method is a useful nondestructive method to derive the refractive index of an unknown bulk porous material.