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Proceedings Paper

Widely tunable THz-wave emitter with linear polarization characteristics based on antenna-integrated UTC-PD
Author(s): Hiroshi Ito; Toshihide Yoshimatsu; Hiroshi Yamamoto; Tadao Ishibashi
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Paper Abstract

A photomixer-based THz-wave emitter having linear polarization characteristics was developed by integrating a unitraveling- carrier photodiode (UTC-PD) and a self-complementary reflection-symmetry antenna. The fabricated module was operated at frequencies from 120 GHz to 2.6 THz, and the typical level of output power was 2.8 μW at 1 THz for a photocurrent of 9 mA at a bias voltage of -0.4 V. It also exhibited stable principal polarization axis angles within ±1° at frequencies from 200 GHz to 2 THz, and the generated signals were linearly polarized with extinction ratios below 5% at frequencies from 200 to 800 GHz. The fabricated module was successfully applied to sub-THz-wave ellipsometry without using an external polarizer.

Paper Details

Date Published: 5 September 2014
PDF: 8 pages
Proc. SPIE 9199, Terahertz Emitters, Receivers, and Applications V, 919908 (5 September 2014); doi: 10.1117/12.2060986
Show Author Affiliations
Hiroshi Ito, Kitasato Univ. (Japan)
Toshihide Yoshimatsu, NTT Photonics Labs. (Japan)
Hiroshi Yamamoto, Kitasato Univ. (Japan)
Tadao Ishibashi, NTT Photonics Labs. (Japan)

Published in SPIE Proceedings Vol. 9199:
Terahertz Emitters, Receivers, and Applications V
Manijeh Razeghi; Alexei N. Baranov; John M. Zavada; Dimitris Pavlidis, Editor(s)

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