Title :
THz-induced nonlinear optical transients of coherent excitons in semiconductor QWs
Author :
Lee, Yun-Shik ; Jameson, A.D. ; Tomaino, J.L. ; Prineas, J.P. ; Steiner, J.T. ; Kira, M. ; Koch, S.W.
Author_Institution :
Dept. of Phys., Oregon State Univ., Corvallis, OR, USA
Abstract :
We demonstrate the ultrafast coherent dynamics of exciton wavepackets in semiconductor QWs resonantly driven by strong narrowband THz pulses. Time-resolved THz-pump and optical-probe measurements exhibit large-signal nonlinear optical transients of the HH and LH exciton lines in GaAs/AlGaAs QWs.
Keywords :
III-V semiconductors; aluminium compounds; excitons; gallium arsenide; nonlinear optics; semiconductor quantum wells; terahertz wave spectra; time resolved spectra; GaAs-AlGaAs; THz-induced nonlinear optical transients; exciton wavepackets; narrowband THz pulses; optical-probe measurement; semiconductor QW; time-resolved THz-pump; ultrafast coherent dynamics; Excitons; Gallium arsenide; Narrowband; Nonlinear optics; Optical pulses; Optical pumping; Pulse amplifiers; Resonance; Stimulated emission; Ultrafast optics;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves, 2009. IRMMW-THz 2009. 34th International Conference on
Conference_Location :
Busan
Print_ISBN :
978-1-4244-5416-7
Electronic_ISBN :
978-1-4244-5417-4
DOI :
10.1109/ICIMW.2009.5324778
