20 THz broadband generation using semi-insulating GaAs interdigitated photoconductive antennas

We demonstrate broadband (20 THz), high electric field, terahertz generation using large area interdigitated antennas fabricated on semi-insulating GaAs. The bandwidth is characterized as a function of incident pulse duration (15-35 fs) and pump energy (2-30 nJ). Broadband spectroscopy of PTFE is sh...

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Bibliographic Details
Published in:	Optics express Vol. 22; no. 21; pp. 26358 - 26364
Main Authors:	Hale, P J, Madeo, J, Chin, C, Dhillon, S S, Mangeney, J, Tignon, J, Dani, K M
Format:	Journal Article
Language:	English
Published:	United States Optical Society of America - OSA Publishing 20-10-2014
Subjects:	Computer-Aided Design Condensed Matter Electric Conductivity Equipment Design Lasers Lighting - instrumentation Materials Science Photons Physics Terahertz Radiation Transducers
Online Access:	Get full text
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Summary:	We demonstrate broadband (20 THz), high electric field, terahertz generation using large area interdigitated antennas fabricated on semi-insulating GaAs. The bandwidth is characterized as a function of incident pulse duration (15-35 fs) and pump energy (2-30 nJ). Broadband spectroscopy of PTFE is shown. Numerical Drude-Lorentz simulations of the generated THz pulses are performed as a function of the excitation pulse duration, showing good agreement with the experimental data.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1094-4087 1094-4087
DOI:	10.1364/OE.22.026358