Exciton trapping in a dc-biased quantum well is shown to result in the emission of broadband terahertz transients. The transients are free from bandwidth limitations, very intense, and quite distinctive.
© 2001 Optical Society of America
S. Hughes and D. S. Citrin, "Broadband terahertz emission through exciton trapping in a semiconductor quantum well," Opt. Lett. 26, 1-3 (2001)