Fiber-coupled terahertz source based on passive transponder nanoantennas

Deniz Turan; Nezih Tolga Yardimci; Ping Keng Lu; Mona Jarrahi

doi:10.1117/12.2577876

5 March 2021 Fiber-coupled terahertz source based on passive transponder nanoantennas

Deniz Turan, Nezih Tolga Yardimci, Ping Keng Lu, Mona Jarrahi

Proceedings Volume 11685, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XIV; 116850A (2021) https://doi.org/10.1117/12.2577876
Event: SPIE OPTO, 2021, Online Only

Abstract

We present a telecommunication-compatible terahertz source based on passive transponder nanoantennas. When excited with an optical pump beam, photogenerated carriers in a photo-absorbing substrate are swept to an array of terahertz radiating nanoantennas by a built-in electric field formed between the nanoantennas and substrate. The photoconductive substrate is specifically grown to maximize the strength and overlap of the built-in electric field with the photogenerated carriers to provide high optical-to-terahertz conversion efficiencies. We have used this terahertz generation scheme to develop a fiber-coupled passive transponder that provides more than a 110 dB dynamic range over a 5 THz bandwidth.

Conference Presentation

Citation Download Citation

Deniz Turan, Nezih Tolga Yardimci, Ping Keng Lu, and Mona Jarrahi "Fiber-coupled terahertz source based on passive transponder nanoantennas", Proc. SPIE 11685, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XIV, 116850A (5 March 2021); https://doi.org/10.1117/12.2577876

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KEYWORDS

Terahertz sources

Nanoantennas

Transponders

Terahertz radiation

Terahertz spectroscopy

Semiconductor lasers

Semiconductors

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