Polarization-Dependent Ultrafast Carrier Dynamics in GaAs with Anisotropic Response
Polarization-Dependent Ultrafast Carrier Dynamics in GaAs with Anisotropic Response
复制标题
具有各向异性响应的 GaAs 中偏振相关的超快载流子动力学
DOI：
10.1088/1674-1056/ac422b
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发表时间：
2022
影响因子：
1.7
通讯作者：
Shi-Bing Liu
中科院分区：
文献类型：
--
作者：
Ya-Chao Li;Chao Ge;Peng Wang;Shuang Liu;Xiao-Ran Ma;Bing Wang;Hai-Ying Song;Shi-Bing Liu
抽象的。利用极化相关超快时间分辨瞬态吸收技术，系统地研究了GaAs各向异性的瞬态动力学过程。研究结果表明，在泵浦和探测过程中，反射率的各向异性都得到了增强，表明无论GaAs样品的具体结晶度和取向如何，都存在具有载流子弛豫各向异性特征的光子-声子耦合共振吸收。研究结果对偏振相关的超快载流子动力学有了更深入的认识，也证明了偏振激光与半导体相互作用的重要性。
Abstract. The transient dynamics of anisotropic properties of GaAs is 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.