Reduction of Interference Oscillations in Observing Intersubband Transitions in AlSb/GaSb Superlattices by Fourier Transform Infrared Spectroscopy

作     者：RU Guoping LI Aizhen 

作者机构：State Key Laboratory of Functional Materials for InformaticsShanghai Institute of MetallurgyAcademia SinicaShanghai 200050 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：1995年第12卷第11期

页      面：685-688页

核心收录：

学科分类：080903[工学-微电子学与固体电子学] 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] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：Supported by the National Natural Science Foundation of China in part by the State Key Laboratory of Semiconductor Superlattices 

主　　题：spectra. incident transitions 

摘      要：Intersubband transitions from L_(1) to L_(2) subbands in AISb/GaSb superlattices in the 8-18μm wavelength range are observed by employing normal-and oblique-incident Fourier transform infrared(FTIR)spectroscopic *** AlSb rather than GaSb as the buffer layer,interference oscillations in normal-incident FTlR spectra are significantly reduced,which facilitates one to distinguish intersubband transition *** the oblique-incident mode where a 45°thallium hexahedron is used for internal reflection,interference oscillations are eliminated,making it possible to observe weak intersubband transitions that cannot be distinguished in normal-incident absorption spectra.