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Journal article

Terahertz field enhancement to the MV/cm regime in a tapered parallel plate waveguide

By Iwaszczuk, Krzysztof1,2; Andryieuski, Andrei1,3; Lavrinenko, Andrei1,3; Zhang, X.-C.4; Jepsen, Peter Uhd1,2

From

Department of Photonics Engineering, Technical University of Denmark1

Teraherts Technologies and Biophotonics, Department of Photonics Engineering, Technical University of Denmark2

Metamaterials, Department of Photonics Engineering, Technical University of Denmark3

University of Rochester4

We investigate field enhancement properties of a tapered parallel plate waveguide for ultrashort terahertz (THz) pulses. We use two independent methods, air biased coherent detection inside the waveguide and free-space electro-optic sampling, respectively, which enables a calibrated, quantitative measurement of the field strength at the output of the waveguide.

Field enhancement factors greater than 20 are demonstrated and record-high field strengths of > 1.4 MV/cm are reached. We find an excellent agreement between the two independent methods of field measurement and a numerical 3D full-vectorial time-domain simulations.

Language: English
Year: 2012
Pages: 8344-8355
ISSN: 10944087
Types: Journal article
DOI: 10.1364/OE.20.008344
ORCIDs: Andryieuski, Andrei , Lavrinenko, Andrei and Jepsen, Peter Uhd

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