S. Hughes et Ds. Citrin, Creation of highly anisotropic wave packets in quantum wells: Dynamical Franz-Keldysh effect in the optical and terahertz regimes, PHYS REV B, 59(8), 1999, pp. R5288-R5291
study the dynamical Franz-Keldysh effect by subjecting a semiconductor quan
tum well to both a strong THz-frequency driving held and a weak broadband o
ptical pulse. Coulombic effects and the THz field are included nonperturbat
ively. Our results shaw THz sidebands in the optical absorption spectrum an
d harmonically generated subpicosecond bursts of radiation in the THz regim
e; The propagating wave packets are simultaneously analyzed and application
s are discussed.