39th Int. Conf. on Infrared, Millimeter, and THz Waves
September 14-19, 2014
The University of Arizona, Tucson, AZ
M4/A - 1. Imagers and Imaging Techniques III
Monday, September 15, 2014 4:00 pm to 5:30 pm
Room: Union Kiva Room (2nd floor)
Chairperson: Dan Mittleman
4:00 pm 4:00 pm : Design, Fabrication And Characterization Of 585 GHz Integrated Focal- Plane Arrays Based On Heterostructure Backward Diodes
Presenter: Syed Rahman

We report the design, fabrication and characterization results of 585 GHz focal-plane arrays (FPAs) using Sb-based heterostructure backward diodes (Sb-HBDs) integrated with lens-coupled folded-dipole antennas (LC-FDAs). Under impedance matching condition, a responsivity of 9,800 V/W at 585 GHz for a single array element detector can be achieved based on simulation results. In order to expand the single element into two-dimensional (2D) FPAs, the off-axis radiation patterns of the FDA array, as well as the mutual coupling between adjacent elements have been analyzed. The designed 2D arrays have been fabricated and characterization results are presented.

Author(s):
Syed Rahman - University of Notre Dame
Zhenguo Jiang - University of Notre Dame
Huili (Grace) Xing - University of Notre Dame
Patrick Fay - University of Notre Dame
Lei Liu - University of Notre Dame
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4:30 pm 4:30 pm : Terahertz Edge Detection With Antenna-Coupled Field-Effect Transistors In 0.25µm AlGaN/GaN Technology
Presenter: Sebastian Boppel

Bow-tie antenna coupled field-effect transistors have been implemented in 0.25-µm AlGaN/GaN process technology and have been mounted on an aplanatic hemispherical silicon substrate lens. By asymmetric coupling of 590-GHz radiation to the channel, the transistors are used as direct power detectors, achieving system noise-equivalent power values of 166 pW/vHz at 590 GHz (referred to the total beam power). By symmetric coupling, edge detection is achieved on a device level..

Author(s):
Sebastian Boppel - Physikalisches Institut, Johann Wolfgang Goethe Universit‰t, Frankfurt am Main, Germany
Mantas Ragauskas - Center for physical sciences and technology, Vilnius, Lithuania
Ahid Hajo - Physikalisches Institut, Johann Wolfgang Goethe Universit‰t, Frankfurt am Main, Germany
Maris Bauer - Physikalisches Institut, Johann Wolfgang Goethe Universit‰t, Frankfurt am Main, Germany
Alvydas Lisauskas - Physikalisches Institut, Johann Wolfgang Goethe Universit‰t, Frankfurt am Main, Germany
Serguei Chevtchenko - Ferdinand-Braun-Institut, Leibniz-Institut f¸r Hˆchstfrequenztechnik (FBH), Berlin, Germany
Adam R‰mer - Ferdinand-Braun-Institut, Leibniz-Institut f¸r Hˆchstfrequenztechnik (FBH), Berlin, Germany
Irmantas Kaöalynas - Center for physical sciences and technology, Vilnius, Lithuania
Gintaras Valuöis - Center for physical sciences and technology, Vilnius, Lithuania
Joachim W¸rfl - Ferdinand-Braun-Institut, Leibniz-Institut f¸r Hˆchstfrequenztechnik (FBH), Berlin, Germany
Wolfgang Heinrich - Ferdinand-Braun-Institut, Leibniz-Institut f¸r Hˆchstfrequenztechnik (FBH), Berlin, Germany
G¸nther Tr‰nkle - Ferdinand-Braun-Institut, Leibniz-Institut f¸r Hˆchstfrequenztechnik (FBH), Berlin, Germany
Viktor Krozer - Physikalisches Institut, Johann Wolfgang Goethe Universit‰t, Frankfurt am Main, Germany
Hartmut Roskos - Physikalisches Institut, Johann Wolfgang Goethe Universit‰t, Frankfurt am Main, Germany
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4:45 pm 4:45 pm : 3D Terahertz Versus X-ray Imaging For Mochica Ceramic Investigation
Presenter: Patrick Mounaix

Time domain THz spectroscopy and 3D imaging are used for non-destructive analyses of modern pottery which was made using ancient and traditional technology. Our study demonstrates that the internal structure of this of Pre-Columbian civilizations Mochica type pottery can be revealed with the help of X-Ray images used as references.

Author(s):
Patrick Mounaix - LOMA UMR CNRS 5798 UNIVERSITE DE BORDEAUX
Lena Bassel - LOMA UMR CNRS 5798 UNIVERSITE DE BORDEAUX
Joyce Bou Sleiman - LOMA UMR CNRS 5798 UNIVERSITE DE BORDEAUX
Bruno Bousquet - LOMA UMR CNRS 5798 UNIVERSITE DE BORDEAUX
Hugo Balacey - LOMA UMR CNRS 5798 UNIVERSITE DE BORDEAUX
Benoit Recur - RSPE, Dept Applied Maths, Australian National University
HÈlËne Coquegniot - PACEA Anthropologie des Populations PassÈ et PrÈsentes, UMR 5199 CNRSes
Nino Del Solar - IRAMAT Institut de Recherche sur les ArchÈomatÈriaux, UMR 5060 CNRS,
phillipp dollwetzel - IRAMAT Institut de Recherche sur les ArchÈomatÈriaux, UMR 5060 CNRS,
RÈmy Chapoulie - IRAMAT Institut de Recherche sur les ArchÈomatÈriaux, UMR 5060 CNRS,
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5:00 pm 5:00 pm : Demonstration Of Large Field Of View Fast Scanning Based On A Real-time Uncooled Antenna & Cavity Coupled Bolometer Array Camera
Presenter: FranÁois Simoens

Real-life applications of terahertz (THz) systems often require fast imaging of large field of view of opaque scenes. Such features have been demonstrated by the development of a complete reflection active THz imaging system that combines QCLs as sources and antenna & cavity coupled micro-bolometer as THz video camera. While better than 5 mm resolution images of 40x60 mm≤ illuminated surfaces are acquired in real-time, a rotating planar mirror provides fast scanning of large areas, e.g. 20x30 cm≤ in less than 10 seconds. This paper gives an overview of the developed system and video demonstrations.

Author(s):
FranÁois Simoens - CEA-Leti Minatec
JÈrÈmy Lalanne-DÈra - CEA-Leti Mintatec
SÈbastien Martin - CEA-Leti Minatec
StÈphane Pocas - CEA-Leti Minatec
Serge Gidon - CEA-Leti Minatec
Wilfried Rabaud - CEA-Leti Minatec
JÈrÙme Meilhan - CEA-Leti Minatec
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5:15 pm 5:15 pm : Measurement Of Spatial Response Of CMOS Antenna-Coupled FET Detector At 325GHz
Presenter: Matteo Perenzoni

A FET detector, fabricated in a standard CMOS technology and coupled to a bow-tie antenna is characterized in terms of spatial response by using a deconvolution method. An optical setup is used to produce a predictable impulse response. The resulting spatial response shows interaction with other structures present on the chip, while the measured shape is in agreement with the antenna effective area calculations.

Author(s):
Matteo Perenzoni - Fondazione Bruno Kessler
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