Title :
THz study of field screening: 10 fs-100 fs regime
Author :
Hu, B.B. ; de Souza, E.A. ; Knox, H. ; Cunningham, J.E. ; Nuss, M.C.
Author_Institution :
AT&T Bell Labs., Holmdel, NJ, USA
fDate :
31 Oct-3 Nov 1994
Abstract :
Here, we present the first THz study of field screening on such a time scale by using a 10 fs laser, and a correlation technique. We prove for the first time that both the polarisation and the acceleration ofthe electron-hole pairs by the dc electric field contribute to THz emission. We show that the polarization contribution has a speed comparable to the optical pulse duration, while the transport contribution at early times is determined by the ballistic acceleration of the electron hole pairs
Keywords :
microwave generation; 10 to 100 fs; THz emission; THz study; acceleration; ballistic acceleration; correlation technique; dc electric field; electron hole pairs; electron-hole pairs; field screening; optical pulse duration; polarisation; polarization contribution; transport contribution; Acceleration; Charge carrier processes; Delay effects; Energy resolution; Gallium arsenide; Optical polarization; Optical pulses; Pulse measurements; Pump lasers; Quantum well devices;
Conference_Titel :
Lasers and Electro-Optics Society Annual Meeting, 1994. LEOS '94 Conference Proceedings. IEEE
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-1470-0
DOI :
10.1109/LEOS.1994.586418
