Title :
Femtosecond Electron Acceleration in Bulk GaAs Investigated by Time-Domain THz Spectroscopy
Author :
Zhu, Y.M. ; Umuna, T. ; Shibata, K. ; Hirakawa, K.
Author_Institution :
Inst. of Ind. Sci. & CINQIE, Univ. of Tokyo, Tokyo
Abstract :
Nonequilibrium electron transport under very high electric fields up to 300 kV/cm has been investigated by time-domain terahertz spectroscopy. It is found that effective acceleration mass experienced by photoexcited electrons significantly increases with increasing fields (30 times at 300 kV/cm), suggesting strong band mixing into Wannier functions of electrons.
Keywords :
III-V semiconductors; Wannier functions; gallium arsenide; submillimetre wave spectra; time resolved spectra; GaAs; Wannier functions; band mixing; bulk GaAs; femtosecond electron acceleration; nonequilibrium electron transport; photoexcited electrons; time-domain terahertz spectroscopy; Acceleration; Electron emission; Gallium arsenide; Lasers and electrooptics; Mass spectroscopy; Optical pulse generation; Pump lasers; Schottky diodes; Surface emitting lasers; Time domain analysis;
Conference_Titel :
Lasers and Electro-Optics - Pacific Rim, 2007. CLEO/Pacific Rim 2007. Conference on
Conference_Location :
Seoul
Print_ISBN :
978-1-4244-1173-3
Electronic_ISBN :
978-1-4244-1174-0
DOI :
10.1109/CLEOPR.2007.4391122
