Journal ArticleDOI
WIDE RANGE DETECTOR USING PARABOLIC CYLINDRICAL MIRROR FOR THz APPLICATIONS
Takanari Yasui,Takeshi Ohtsuka,Tetsu Suzuki,Shigeki Okajima,Kazuya Nakayama,Mitsuru Tomioka,Katsuhiro Kamimura,Takeo Namekata,Hiroaki Minamide,Hiromasa Ito +9 more
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TLDR
In this article, a wideband, high-speed and high-sensitivity THz detector has been developed, which consists of a parabolic cylindrical mirror, a long wire antenna and a Schottky barrier diode.Abstract:
A new, wide-band, high-speed and high-sensitivity THz detector has been developed. The prototype detector consists of a parabolic cylindrical mirror, a long wire antenna and a Schottky barrier diode. Direct detection measurements have shown a stable sensitivity of 150 ± 50 V/W for 1–2 THz without any adjustments. The long wire antenna was fixed at the focus of parabolic cylindrical mirror then it has been realized less operation steps, easy coupling to the external THz signals and a dramatic enhancement in the practicality of this system. The optically polished mirror and frosted surface one showed comparable sensitivities, thus easy polishing and less cost mirror fabrication can be applied for this system. The radiation pattern showed a maximum radiation angle of approximately 23° with its dominant main lobe, which was attributed to the wire antenna character and confirmed good agreements with classical antenna theory.read more
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Journal Article
Terahertz Pioneers
TL;DR: This month the authors travel to Japan to speak with Dr. Hiromasa Ito, a longterm affiliate of the Research Institute of Electrical Communication, Tohoku University, Sendai, and a former Team Leader in Terahertz Photonics at Japan's premier science research institution, RIKEN.
Journal ArticleDOI
Terahertz pioneers: A series of interviews with significant contributors to terahertz science and technology
TL;DR: In this paper, a series of biographical interviews with technical researchers who have contributed significantly, and over many years, to the terahertz community, and as a guide and inspiration for those who are just beginning their professional association with this field of study are presented.
Journal ArticleDOI
Terahertz Pioneer: Hiromasa Ito “Generating THz Energy is Crystal Clear”
TL;DR: An interview with IEEE Fellow Hiromasa Ito is presented in this paper, where Ito discusses the importance of diversity in the IEEE's research process and its impact on research.
Journal ArticleDOI
ABCD Matrix for Reflection and Refraction of Gaussian Beams on the Interface of an Elliptic Paraboloid
TL;DR: In this article, the reflection and refraction of Gaussian beams on the interface of an elliptic paraboloid that divides media of different refractive indices are derived based on boundary value relation in electromagnetic field.
Proceedings ArticleDOI
Simulation model of the wideband total power radiometer
TL;DR: In this paper, a simulation model of wideband total power radiometer channel is built by the combination of simulation tools in ADS and MATLAB in order to simulate the actual measurement process of temperature sensitivity.
References
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Book
Antenna Theory: Analysis and Design
TL;DR: The most up-to-date resource available on antenna theory and design as mentioned in this paper provides an extended coverage of ABET design procedures and equations making meeting ABET requirements easy and preparing readers for authentic situations in industry.
Antenna theory : analysis and design
TL;DR: The most up-to-date resource available on antenna theory and design is the IEEE 802.11 as mentioned in this paper, which provides detailed coverage of ABET design procedures and equations, making meeting ABET requirements easy and preparing readers for authentic situations in industry.
Journal ArticleDOI
Electrooptical generation and detection of femtosecond electrical transients
D. H. Auston,Martin C. Nuss +1 more
TL;DR: In this paper, a coupled oscillator model is used to predict the limiting speed of response and generation efficiency of different electrooptic materials, including lithium tantalate, when the duration of the exciting femto second optical pulse is comparable to the period of lattice vibrations.
Journal ArticleDOI
Terahertz wave parametric source
TL;DR: In this article, a tunable terahertz (THz) wave source with a frequency range between 0.7 and 3 THz was proposed, using a parametric oscillation of LiNbO3 or MgO-doped LiNiBO3 crystal.
Journal ArticleDOI
Detection of up to 20 THz with a low-temperature-grown GaAs photoconductive antenna gated with 15 fs light pulses
TL;DR: In this paper, a low-temperature grown GaAs photoconductive dipole antenna gated with 15 fs light pulses was used for the detection of radiation in wavelengths spanning from far to mid-infrared.