Generation and detection of terahertz pulses from biased semiconductor antennas

Peter Uhd Jepsen, R. H. Jacobsen, S. R. Keiding

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

We propose a simple model based on the Drude-Lorentz theory of carrier transport to account for the details of the ultrashort terahertz pulses radiated from small photoconductive semiconductor antennas. The dynamics of the bias field under the influence of the space-charge field from the accelerated carriers is included in the model. We consider in detail the optical system used to image the terahertz radiation onto the terahertz detector, and we calculate the frequency-dependent response of the detector. The proposed model is compared with several different experiments, each focusing on different parameters of the model. Agreement between experiment and model is found in all cases, supporting the validity of this simple and appropriate model. (C) 1996 Optical Society of America.
Original languageEnglish
JournalJournal of the Optical Society of America B-optical Physics
Volume13
Issue number11
Pages (from-to)2424-2436
Number of pages13
ISSN0740-3224
DOIs
Publication statusPublished - Nov 1996
Externally publishedYes

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