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Proceedings Paper

High-dynamic-range time-domain terahertz spectroscopy system operating at 1 μm optical wavelength (Conference Presentation)
Author(s): Deniz Turan; Nezih Tolga Yardimci; Mona Jarrahi

Paper Abstract

We demonstrate a high dynamic range, broadband THz-TDS system that is compatible with 1 μm femtosecond lasers. In order to improve the dynamic range and bandwidth, we designed and fabricated photoconductive terahertz sources and detectors equipped with arrays of plasmonic nano-antennas fabricated on an epitaxially-grown In0.24Ga0.76As substrate. Plasmonic nano-antennas concentrate the photo-generated carriers close to the antenna-photoconductor interface. This ensures a superior performance both in terahertz generation and detection by increasing the induced ultrafast current at the antenna terminals. We demonstrate a THz-TDS system with more than a 100 dB dynamic range and a 4 THz bandwidth.

Paper Details

Date Published: 10 March 2020
PDF
Proc. SPIE 11279, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XIII, 112790W (10 March 2020); doi: 10.1117/12.2547034
Show Author Affiliations
Deniz Turan, Univ. of California, Los Angeles (United States)
Nezih Tolga Yardimci, Univ. of California, Los Angeles (United States)
Mona Jarrahi, Univ. of California, Los Angeles (United States)


Published in SPIE Proceedings Vol. 11279:
Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XIII
Laurence P. Sadwick; Tianxin Yang, Editor(s)

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