Title :
Dynamical Franz-Keldysh effect in GaAs induced by monocycle terahertz pulse
Author :
Shinokita, Keisuke ; Hirori, Hideki ; Nagai, Masaya ; Sato, Naoko ; Kadoya, Yutaka ; Tanaka, Koichiro
Author_Institution :
Dept. of Phys., Kyoto Univ., Kyoto, Japan
Abstract :
We studied electron-hole behaviors interacted with intense THz pulse in GaAs MQW. THz pulse causes strong modulations of exciton in absorption spectrum. For high THz electric fields, hh exciton energy shows blueshift proportional to THz electric field squared, due to dynamical Franz-Keldysh effect.
Keywords :
III-V semiconductors; excitons; gallium arsenide; semiconductor quantum wells; spectral line shift; terahertz wave spectra; GaAs; GaAs multiple quantum well; absorption spectrum; blue shift; dynamical Franz-Keldysh effect; electron-hole behaviors; exciton energy; exciton modulations; high terahertz electric fields; intense terahertz pulse; monocycle terahertz pulse; Absorption; Electric fields; Excitons; Gallium arsenide; Measurement by laser beam; Quantum well devices; Stimulated emission;
Conference_Titel :
Infrared Millimeter and Terahertz Waves (IRMMW-THz), 2010 35th International Conference on
Conference_Location :
Rome
Print_ISBN :
978-1-4244-6655-9
DOI :
10.1109/ICIMW.2010.5612804
