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Proceedings Paper

Microfabricated scanning near-field probe for sub-terahertz spectroscopy
Author(s): Kentaro Iwami; Takahito Ono; Masayoshi Esashi
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Paper Abstract

This paper reports design, fabrication and evaluation of a novel scanning near-field probe for terahertz (THz) local time domain spectroscopy (THz-TDS). A microfabricated scanning near-field optical microscopy (SNOM) probe was assembled with a low-temperature-grown gallium arsenide (LT-GaAs) photoconductive antenna. The probe structure was evaluated and determined by a finite-difference time-domain (FDTD) numerical simulation. The assembly was used as the THz emitter and local THz source. Another LT-GaAs antenna situated at the opposite side was used as the detector. A THz-TDS measurement using the microfabricated SNOM probe and photoconductive antenna was performed.

Paper Details

Date Published: 12 January 2009
PDF: 6 pages
Proc. SPIE 7133, Fifth International Symposium on Instrumentation Science and Technology, 713313 (12 January 2009); doi: 10.1117/12.807261
Show Author Affiliations
Kentaro Iwami, Tokyo Univ. of Agriculture and Technology (Japan)
Takahito Ono, Tohoku Univ. (Japan)
Masayoshi Esashi, Tohoku Univ. (Japan)


Published in SPIE Proceedings Vol. 7133:
Fifth International Symposium on Instrumentation Science and Technology

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