Influence of Frohlich Interaction on Intersubband Transitions of InGaAs/InAlAs-Based Quantum Cascade Detector Structures Investigated by Infrared Modulated Photoluminescence  

作　　者：朱亮清 刘舒曼 邵军 陈熙仁 刘峰奇 胡志高 褚君浩 Liangqing Zhu;Shuman Liu;Jun Shao;Xiren Chen;Fengqi Liu;Zhigao Hu;Junhao Chu(Technical Center for Multifunctional Magneto-Optical Spectroscopy(Shanghai),School of Physics and Electronic Science,East China Normal University,Shanghai 200241,China;Key Laboratory of Semiconductor Materials Science,Institute of Semiconductors,Chinese Academy of Sciences,Beijing 100083,China;National Laboratory for Infrared Physics,Shanghai Institute of Technical Physics,Chinese Academy of Sciences,Shanghai 200083,China)

机构地区：[1]Technical Center for Multifunctional Magneto-Optical Spectroscopy(Shanghai),School of Physics and Electronic Science,East China Normal University,Shanghai 200241,China [2]Key Laboratory of Semiconductor Materials Science,Institute of Semiconductors,Chinese Academy of Sciences,Beijing 100083,China [3]National Laboratory for Infrared Physics,Shanghai Institute of Technical Physics,Chinese Academy of Sciences,Shanghai 200083,China

出　　处：《Chinese Physics Letters》2023年第7期86-92,共7页中国物理快报（英文版）

基　　金：supported by the National Key Research and Development Program of China(Grant No.2019YFB2203400);the National Natural Science Foundation of China(Grant Nos.61974044 and 11974368);the Shanghai Committee of Science and Technology of China(Grant Nos.20142201000 and 21ZR1421500)。

摘　　要：We demonstrate the use of an infrared modulated photoluminescence(PL)method based on a step-scan Fourier-transform infrared spectrometer to analyze intersubband transition(ISBT)of InGaAs/InAlAs quantum cascade detector(QCD)structures.By configuring oblique and parallel excitation geometries,high signal-to-noise ratio PL spectra in near-to-far-infrared region are measured.With support from numerical calculations based on the k·p perturbation theory,the spectra is attributed to intraband and interband transitions of InGaAs/InAlAs QCD structures.Temperature evolution results show that the k-dependent transitions caused by longitudinal optical phonon-assisted scattering(Frohlich interaction)plays an important role in the ISBT.These results suggest that this infrared modulated-PL method has great potential in characterizing QCD devices and conducting performance diagnostics.

关 键 词：TRANSITIONS Frohlich Transition 

分 类 号：TN215[电子电信—物理电子学]