Title :
Ultrafast optical-pump THz-probe spectroscopy of the carrier dynamics in oriented germanium nanowires
Author :
Strait, Jared H. ; George, Paul A. ; Rana, Farhan ; Levendorf, Mark ; Blood-Forsythe, Martin ; Park, Jiwoong
Author_Institution :
Sch. of Electr. & Comput. Eng., Cornell Univ., Ithaca, NY, USA
Abstract :
We present ultrafast optical-pump THz-probe measurements of the carrier intraband relaxation and interband recombination dynamics in oriented Germanium nanowires. We find 2-3 ps intraband relaxation times and density-dependent recombination times in the 50-100 ps range at 300 K.
Keywords :
high-speed optical techniques; nanowires; optical pumping; terahertz spectroscopy; THz-probe spectroscopy; carrier dynamics; carrier intraband relaxation; interband recombination dynamics; oriented germanium nanowires; ps intraband relaxation times; temperature 300 K; time 50 ps to 100 ps; ultrafast optical-pump; Biomedical optical imaging; Electron optics; Germanium; Nanowires; Optical pumping; Optical scattering; Optical sensors; Radiative recombination; Spectroscopy; Ultrafast optics; 300.6495 Spectroscopy, terahertz; 300.6500 Spectroscopy, time-resolved; 320.7130 Ultrafast processes in condensed matter, including semiconductors; 320.7150 Ultrafast Spectroscopy;
Conference_Titel :
Lasers and Electro-Optics, 2009 and 2009 Conference on Quantum electronics and Laser Science Conference. CLEO/QELS 2009. Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-55752-869-8
Electronic_ISBN :
978-1-55752-869-8
