Title :
Ultrafast optical-pump terahertz-probe spectroscopy of individual silicon nanowires
Author :
Taeyong Kim ; Sangwan Sim ; Jungmok Seo ; Jaehong Lee ; Heetak Han ; Taeyoon Lee ; Hyunyong Choi
Author_Institution :
Sch. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea
Abstract :
We present terahertz carrier dynamics in individual silicon nanowires by ultrafast optical-pump and terahertz-probe spectroscopy. Density-dependent study reveals that the surface traps play a major role in the carrier dynamics, in which the conductivity changes with the terahertz polarization parallel to nanowire axis are extracted.
Keywords :
elemental semiconductors; high-speed optical techniques; light polarisation; nanophotonics; nanowires; optical pumping; semiconductor quantum wires; silicon; terahertz spectroscopy; Si; conductivity changes; density-dependent study; silicon nanowires; surface traps; terahertz carrier dynamics; terahertz polarization; ultrafast optical-pump terahertz-probe spectroscopy; Nanowires; Optical imaging; Optical polarization; Optical pumping; Silicon; Spectroscopy; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2013 Conference on
Conference_Location :
San Jose, CA
