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Proceedings Paper

Development of terahertz focal plane arrays and handy camera
Author(s): Naoki Oda; Masahiko Sano; Ken'ichi Sonoda; Hajime Yoneyama; Seiji Kurashina; Masaru Miyoshi; Tokuhito Sasaki; Iwao Hosako; Norihiko Sekine; Takayuki Sudou; Shuichi Ohkubo
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Paper Abstract

Uncooled Terahertz (THz) focal plane array (FPA), 320x240 format-23.5 μm pitch, and THz imager were developed. There are two types of THz-FPAs, i.e., broad-band type and narrow-band type. Since broad-band type THz-FPA was developed, a couple of modifications have been made to improve Noise Equivalent Power. The narrow-band type THz-FPA has such a new structure that Si cover is put above thermal isolation structure of broad-band type THz-FPA at a distance of half of wavelength of interest. Measurements on responsivities of narrow-band type FPAs show enhancement by a factor of ca. 3. Lock-in imaging technique has been developed, which increases signal-to-noise ratio as a function of square root of the number of frames of integration. Both passive and active THz imaging experiments were finally described.

Paper Details

Date Published: 20 May 2011
PDF: 9 pages
Proc. SPIE 8012, Infrared Technology and Applications XXXVII, 80121B (20 May 2011); doi: 10.1117/12.888992
Show Author Affiliations
Naoki Oda, NEC Corp. (Japan)
Masahiko Sano, NEC Corp. (Japan)
Ken'ichi Sonoda, NEC Corp. (Japan)
Hajime Yoneyama, NEC Corp. (Japan)
Seiji Kurashina, NEC Corp. (Japan)
Masaru Miyoshi, NEC Corp. (Japan)
Tokuhito Sasaki, NEC Corp. (Japan)
Iwao Hosako, National Institute of Information and Communications Technology (Japan)
Norihiko Sekine, National Institute of Information and Communications Technology (Japan)
Takayuki Sudou, NEC Avio Infrared Technologies Co., Ltd. (Japan)
Shuichi Ohkubo, NEC Avio Infrared Technologies Co., Ltd. (Japan)

Published in SPIE Proceedings Vol. 8012:
Infrared Technology and Applications XXXVII
Bjørn F. Andresen; Gabor F. Fulop; Paul R. Norton, Editor(s)

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