Title :
Superluminal pulse propagation and group velocity in anomalous dispersion region of an absorbing medium
Author :
Talukder, A.I. ; Ito, T. ; Amagishi, Y. ; Tomita, M.
Abstract :
We have observed a transition from the superluminal to subluminal velocity for optical pulses in the anomalous dispersion region of a resonantly absorbing medium. The pulse velocity is described by a new expression of group velocity using the saddle point method.
Keywords :
high-speed optical techniques; laser beams; light absorption; optical dispersion; Ti:sapphire laser; absorbing medium; anomalous dispersion; group velocity; optical pulses; pulse velocity; resonantly absorbing medium; saddle point method; superluminal pulse propagation; Absorption; Indium tin oxide; Laser mode locking; Optical propagation; Optical pulses; Physics; Propagation delay; Pulse amplifiers; Refractive index; Space vector pulse width modulation;
Conference_Titel :
Lasers and Electro-Optics, 2001. CLEO/Pacific Rim 2001. The 4th Pacific Rim Conference on
Conference_Location :
Chiba, Japan
Print_ISBN :
0-7803-6738-3
DOI :
10.1109/CLEOPR.2001.970845
