Title :
Ultrafast optical-pump terahertz-probe spectroscopy of oriented Ge and Ge/Si core/shell nanowires
Author :
Mihnev, Momchil T. ; Fung, Wayne ; Lu, Wei ; Norris, Theodore B.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Univ. of Michigan, Ann Arbor, MI, USA
Abstract :
We study the time- and frequency-dependent terahertz dynamics of oriented Ge and Ge/Si core/shell nanowires using ultrafast optical-pump terahertz-probe spectroscopy, and we compare their intraband relaxation, interband recombination and momentum scattering times.
Keywords :
band structure; elemental semiconductors; germanium; high-speed optical techniques; nanowires; semiconductor quantum wires; silicon; terahertz wave spectra; Ge; Ge-Si; Ge-Si core-shell nanowires; interband recombination; intraband relaxation; momentum scattering times; oriented Ge nanowires; terahertz dynamics; ultrafast optical-pump terahertz-probe spectroscopy; Nanowires; Optical films; Optical imaging; Optical pulses; Optical scattering; Silicon; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2011 Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-4577-1223-4
