Search Results - "Ikari, Tomofumi"

275–305 GHz FM-CW Radar 3D Imaging for Walk-Through Security Body Scanner by Ikari, Tomofumi, Sasaki, Yoshiaki, Otani, Chiko

“…Imaging using millimeter waves (MMW) and terahertz (THz) waves can help inspect hazardous materials hidden beneath clothing in a non-contact and non-invasive…”
Get full text

THz pulsed time-domain imaging of an oil canvas painting: a case study of a painting by Pablo Picasso by Fukunaga, Kaori, Ikari, Tomofumi, Iwai, Kikuko

“…The terahertz pulsed time-domain imaging technique and near-infrared observation were applied to investigate an oil painting on canvas by Pablo Picasso. The…”
Get full text

Distance Measurement of a Frequency-Shifted Sub-Terahertz Wave Source by Honjo, Minoru, Suizu, Koji, Yamaguchi, Masaki, Ikari, Tomofumi

“…In this paper, we report the development of a frequency-shifted (FS) terahertz (THz) wave source for the non-destructive inspection of buildings. Currently,…”
Get full text

Highly sensitive coherent detection of terahertz waves at room temperature using a parametric process by Guo, Ruixiang, Ohno, Seigo, Minamide, Hiroaki, Ikari, Tomofumi, Ito, Hiromasa

“…We report the experimental results of coherent detection of narrow-linewidth nanosecond terahertz radiation at room temperature using frequency conversion in a…”
Get full text

Development of Terahertz walk-through body scanner using 300 GHz FMCW radar by Ikari, Tomofumi, Sasaki, Yoshiaki, Otani, Chiko

“…A high-throughput imaging scanner for walkthrough security gates has been developed by combining a 275-305 GHz single transceiver and a high-speed scanner…”
Get full text

Terahertz Near-Field Imaging Using Enhanced Transmission through a Single Subwavelength Aperture by Ishihara, Kunihiko, Ikari, Tomofumi, Minamide, Hiroaki, Shikata, Jun-ichi, Ohashi, Keishi, Yokoyama, Hiroyuki, Ito, Hiromasa

“…We demonstrate terahertz (THz) near-field imaging using resonantly enhanced transmission of THz-wave radiation (λ∼200 µm) through a bull's eye structure (a…”
Get full text

Partially Delayed Fizeau Interferometer and Its Application to Optical Coherence Tomography by Ikari, Tomofumi, Sato, Manabu, Tanno, Naohiro

Get full text

Terahertz Wave Enhanced Transmission through a Single Subwavelength Aperture with Periodic Surface Structures by Ishihara, Kunihiko, Hatakoshi, Gen-ichi, Ikari, Tomofumi, Minamide, Hiroaki, Ito, Hiromasa, Ohashi, Keishi

“…We demonstrate resonantly enhanced transmission of terahertz (THz) wave radiation (λ∼200 µm) through a bull's eye structure (a single subwavelength aperture…”
Get full text

Enhancement of the output power of a terahertz parametric oscillator with recycled pump beam by Wu, Dong Ho, Ikari, Tomofumi

“…We report a technique for the terahertz parametric oscillator, in which we recycle the pump beam in order to increase the efficiency and enhance the terahertz…”
Get full text

Frequency-agile THz-wave generation and detection system using nonlinear frequency conversion at room temperature by Guo, Ruixiang, Ikar'i, Tomofumi, Zhang, Jun, Minamide, Hiroaki, Ito, Hiromasa

“…A surface-emitting THz parametric oscillator is set up to generate a narrow-linewidth, nanosecond pulsed THz-wave radiation. The THz-wave radiation is…”
Get full text

THz-wave parametric oscillator with a surface-emitted configuration by Ikari, Tomofumi, Zhang, Xianbin, Minamide, Hiroaki, Ito, Hiromasa

“…We propose a surface-emitted cavity configuration for a terahertz-wave parametric oscillator that allows THz wave emission perpendicular to the crystal surface…”
Get full text

Enhancement of the output power of a terahertz parametric oscillatorwith recycled pump beam by Wu, Dong Ho, Ikari, Tomofumi

“…We report a technique for the terahertz parametric oscillator, in which we recycle the pump beam in order to increase the efficiency and enhance the terahertz…”
Get full text

Terahertz-wave near-field imaging with subwavelength resolution using surface-wave-assisted bow-tie aperture by Ishihara, Kunihiko, Ohashi, Keishi, Ikari, Tomofumi, Minamide, Hiroaki, Yokoyama, Hiroyuki, Shikata, Jun-ichi, Ito, Hiromasa

“…We demonstrate the terahertz-wave near-field imaging with subwavelength resolution using a bow-tie shaped aperture surrounded by concentric periodic structures…”
Get full text

Development of a Walk-Through Body Scanner with a Double-Path Beam Optical Configuration by Ikari, Tomofumi, Sasaki, Yoshiaki, Otani, Chiko

“…We have developed a walk-through body scanner with a double-pass optical configuration that can measure the front and back of the human body in a single pass…”
Get full text

Remote gas sensing in full-scale fire with sub-terahertz waves by Shimizu, N., Ikari, T., Kikuchi, Kenichi, Matsuyama, K., Wakatsuki, A., Kohjiro, S., Fukasawa, R.

“…A remote gas sensor based on a continuous-wave sub-terahertz spectrometer with an operation bandwidth between 200 and 500 GHz has been developed. The…”
Get full text

Terahertz-wave near-field imaging with subwavelength resolutionusing surface-wave-assisted bow-tie aperture by Ishihara, Kunihiko, Ohashi, Keishi, Ikari, Tomofumi, Minamide, Hiroaki, Yokoyama, Hiroyuki, Shikata, Jun-ichi, Ito, Hiromasa

“…We demonstrate the terahertz-wave near-field imaging with subwavelength resolution using a bow-tie shaped aperture surrounded by concentric periodic structures…”
Get full text

Adaptive optics instrumentation in submillimeter/terahertz spectroscopy with a flexible polyvinylidene fluoride cladding hollow waveguide by Hidaka, Takehiko, Ishikawa, Akihiro, Kojou, Jun-Ichiro, Ikari, Tomofumi, Ishikawa, Yoh-Ichi, Minamide, Hiroaki, Kudoh, Akito, Nishizawa, Jun-Ichi, Ito, Hiromasa

“…A simple instrument has been developed to carry out temperature dependent submillimeter/terahertz-wave spectroscopy using a polyvinylidene fluoride flexible…”
Get more information

Terahertz time-domain imaging of "The Last Supper" by Fukunaga, Kaori, Hosako, Iwao, Palazzo, Michela, DallAglio, Lorenza, Aramini, Fabio, Cucci, Costanza, Picollo, Marcello, Ikari, Tomofumi, Duling, Irl N.

“…The terahertz time-domain imaging technique is applied to investigate the internal structure of "The Last Supper", a masterpiece wall painting of Leonardo Da…”
Get full text

Pump beam recycling for an enhancement of the output power of Terahertz-wave parametric oscillator by Ikari, T., Ito, H., Dong Ho Wu

“…We have implemented a recycled pump beam technique on a terahertz parametric oscillator (TPO). The TPO with a recycled beam produces a terahertz beam that is…”
Get full text

Non-metallic foreign matter detection in powder using terahertz pulse by Ikari, Tomofumi, Takahashi, Norimasa, Fukasawa, Ryoichi, Duling, Irl

“…We have demonstrated the detection of non-metallic foreign matter in packets of powder. These particles are typically not dense enough for X-ray detection. The…”
Get full text