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Proceedings Paper

Broadband photonic terahertz-wave emitter integrating UTC-PD and novel planar antenna
Author(s): Hiroshi Ito; Toshihide Yoshimatsu; Hiroshi Yamamoto; Tadao Ishibashi
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Paper Abstract

The uni-traveling-carrier photodiode (UTC-PD) is a novel PD that uses only electrons as the active carriers. This feature is the key for simultaneously realizing high operation speed and high output current, which are essential for generating terahertz (THz) waves with relatively high output power. To transmit electromagnetic waves, we integrated a novel compact planar antenna with a UTC-PD and assembled it in a quasi-optical package. The fabricated module had a relatively high responsivity of 0.21 A/W and was operated in an extremely wide frequency range from 30 GHz to 1.6 THz. The detected output powers were 120 μW at 200 GHz, 17 μW at 500 GHz, and 2.9 μW at 1 THz for a photocurrent of 10 mA with a bias voltage of only -0.6 V.

Paper Details

Date Published: 31 May 2013
PDF: 8 pages
Proc. SPIE 8716, Terahertz Physics, Devices, and Systems VII: Advanced Applications in Industry and Defense, 871602 (31 May 2013); doi: 10.1117/12.2015523
Show Author Affiliations
Hiroshi Ito, Kitasato Univ. (Japan)
Toshihide Yoshimatsu, NTT Corp. (Japan)
Hiroshi Yamamoto, Kitasato Univ. (Japan)
Tadao Ishibashi, NTT Corp. (Japan)
NTT Electronics Corp. (Japan)


Published in SPIE Proceedings Vol. 8716:
Terahertz Physics, Devices, and Systems VII: Advanced Applications in Industry and Defense
Mehdi F. Anwar; Thomas W. Crowe; Tariq Manzur, Editor(s)

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