Polarization-dependent ultrafast carrier dynamics in GaAs with anisotropic response  

作　　者：Ya-Chao Li Chao Ge Peng Wang Shuang Liu Xiao-Ran Ma Bing Wang Hai-Ying Song Shi-Bing Liu 李亚超;葛超;汪鹏;刘爽;麻晓冉;王冰;宋海英;刘世炳(Strong-field and Ultrafast Photonics Laboratory,Key Laboratory of Trans-scale Laser Manufacturing Technology,Ministry of Education,Faculty of Materials and Manufacturing,Beijing University of Technology,Beijing 100124,China;Strong-field and Ultrafast Photonics Laboratory,Beijing Engineering Research Center of Laser Technology,Faculty of Materials and Manufacturing,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]Strong-field and Ultrafast Photonics Laboratory,Key Laboratory of Trans-scale Laser Manufacturing Technology,Ministry of Education,Faculty of Materials and Manufacturing,Beijing University of Technology,Beijing 100124,China [2]Strong-field and Ultrafast Photonics Laboratory,Beijing Engineering Research Center of Laser Technology,Faculty of Materials and Manufacturing,Beijing University of Technology,Beijing 100124,China

出　　处：《Chinese Physics B》2022年第6期635-642,共8页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.51875006 and 51705009)。

摘　　要：The transient dynamics of anisotropic properties of Ga As was systematically studied by polarization-dependent ultrafast time-resolved transient absorption.Our findings revealed that the anisotropy of reflectivity was enhanced in both pump-induced and probe-induced processes,suggesting an extraordinary resonance absorption of photon-phonon coupling(PPC)with intrinsic anisotropic characteristic in carrier relaxation,regardless of the concrete crystallinity and orientation of GaAs sample.The results,delivering in-depth cognition about the polarization-dependent ultrafast carrier dynamics,also proved the paramount importance of interaction between polarized laser and semiconductor.

关 键 词：ultrafast pump-probe polarization-dependence photon-phonon coupling GAAS 

分 类 号：O411[理学—理论物理]