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