Tunable terahertz emission from difference-frequency in biased superlattices
Mesoscale and Nanoscale Physics
2009-11-10 v1
Abstract
The terahertz emission from difference-frequency in biased superlattices is calculated with the excitonic effect included. Owing to the doubly resonant condition and the excitonic enhancement, the typical susceptibility can be as large as m/V. The doubly resonant condition can always be realized by adjusting the bias voltage and the laser frequencies, thus the in-situ tunable emission is efficient in a range of several terahertz. Continuous wave operation with 1% quantum efficiency and W output power is feasible as the signal absorption in undoped superlattices is negligible.
Cite
@article{arxiv.cond-mat/0311494,
title = {Tunable terahertz emission from difference-frequency in biased superlattices},
author = {Ren-Bao Liu and Bang-Fen Zhu},
journal= {arXiv preprint arXiv:cond-mat/0311494},
year = {2009}
}
Comments
3pages 2figures