Terahertz refractive anisotropy on femtosecond laser pulse ablated semi-insulating gallium arsenide surface

CORC > 上海光学精密机械研究所 > 中国科学院上海光学精密机械研究所 > 强场激光物理国家重点实验室

	Terahertz refractive anisotropy on femtosecond laser pulse ablated semi-insulating gallium arsenide surface
	Song, Zhiqiang; Zhao, Zhenyu; Zhao, Quan-Zhong; Shi, Wangzhou; Bai, Feng
刊名	Appl. Phys. A-Mater. Sci. Process.
	2017
卷号	123 期号:4
通讯作者	zyzhao@shnu.edu.cn ; zqz@siom.ac.cn
英文摘要	We present an artificial variation of THz refractive index ellipse from isotropy to anisotropy at the surface of < 100 >-oriented semi-insulating gallium arsenide (SIGaAs) via femtosecond pulse laser ablation. The refractive index ellipse is determined by the frequency and the polarization of incident THz radiation. The THz wave is localized in the gap of columns of micro-ripples when the polarization of THz is parallel to the micro-ripples, while no electric energy localization occurs when the polarization of THz is perpendicular to the micro-ripples. We found that the laser ablation process can induce a periodic distribution of n- type GaAs at the surface of SI-GaAs. These n- type GaAs micro-ripples work as plasmonic resonators, which are proposed to be the origin of the induced refractive index anisotropy.
收录类别	SCI
资助信息	National Natural Science Foundation of China [61307130, 11374316]; Shanghai Municipal Education Commission [14YZ077]; Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry
WOS记录号	WOS:000397581200017
内容类型	期刊论文
源URL	[http://ir.siom.ac.cn/handle/181231/27742]
专题	上海光学精密机械研究所_强场激光物理国家重点实验室
作者单位	中国科学院上海光学精密机械研究所
推荐引用方式 GB/T 7714	Song, Zhiqiang,Zhao, Zhenyu,Zhao, Quan-Zhong,et al. Terahertz refractive anisotropy on femtosecond laser pulse ablated semi-insulating gallium arsenide surface[J]. Appl. Phys. A-Mater. Sci. Process.,2017,123(4).
APA	Song, Zhiqiang,Zhao, Zhenyu,Zhao, Quan-Zhong,Shi, Wangzhou,&Bai, Feng.(2017).Terahertz refractive anisotropy on femtosecond laser pulse ablated semi-insulating gallium arsenide surface.Appl. Phys. A-Mater. Sci. Process.,123(4).
MLA	Song, Zhiqiang,et al."Terahertz refractive anisotropy on femtosecond laser pulse ablated semi-insulating gallium arsenide surface".Appl. Phys. A-Mater. Sci. Process. 123.4(2017).