Tera-photonics Team
Team Leader
Hiroaki MINAMIDE (D.Eng.)
This research team develops state-of-the-art, frequency-agile, tunable THz-wave sources and highly sensitive THz-wave detectors which exploit new THz-wave application fields. THz-wave source and detector of our own design and methodology which light up the gray zone are created using a nonlinear optical process.
The team also makes an online THz database containing THz spectroscopic data for nearly 200 materials going live and aims expanding to more helpful THz database site.
Moreover, the team actively concentrates on collaboration with research groups both within and without RIKEN to explore new applications through our THz technologies.
- Research of ultra-widely frequency-tunable THz-wave sources using nonlinear optical effect
- Research of high-sensitive THz-wave detection using nonlinear optical up-conversion
- Research of carrier density mapping in semiconductor wafers with frequency-agile THz-wave source
- Research of water-content level mapping of biological tissues with frequency-agile THz-wave source
- Collection of THz spectroscopic datum
- September 12, 2008
- Launching the world's first free access to an integrated terahertz data base
- February 06, 2008
- RIKEN opens THz database to public
- December 25, 2009
- Developing a dream light source for terahertz-wave applications
- H. Minamide, J. Zhang, R. Guo, K. Miyamoto, S. Ohno, H. Ito
"High-sensitivity detection of terahertz wave using nonlinear up-conversion in an organic 4-dimethylamino-N-methyl-4-stilbazolium tosylate crystal"
Appl. Phys. Lett., vol.97, 121106-1-3, 2010. - M. Tang, H. Minamide, Y. Wang, T. Notake, S. Ohno, H. Ito
"Dual-wavelength single-crystal double-pass KTP optical parametric oscillator and its application in terahertz wave generation"
Optics Letters, vol.35, no.10, 1698-1700, 2010. - Hiroaki Minamide, Tomofumi Ikari, Hiromasa Ito
"Frequency-agile terahertz-wave parametric oscillator in a ring-cavity configuration"
Review of Scientific Instruments , Vol.80, No.12. pp123104-1-123104-5, Dec. 2009. - Katsuhiko Miyamoto, Seigo Ohno, Masafumi Fujiwara, Hiroaki Minamide, Hideki, Hahimoto, Hiromasa Ito
"Optimized terahertz-wave generation using BNA-DFG"
Optics Express, vol. 17, No. 17, pp14832-14838, Aug. 2009. - Seigo Ohno, Akihide Hamano, Katsuhiko Miyamoto, Chisato Suzuki, Hiromasa Ito
"Surface mapping of carrier density in a GaN wafer using a frequency-agile THz source"
Journal of the European Optical Society - Rapid Publications 4, 09012 Mar. 2009. - Ruixiang Guo, Seigo Ohno, Hiroaki Minamide, Tomofumi Ikari, and Hiromasa Ito
"Highly sensitive coherent detection of terahertz waves at room temperature using a parametric process"
Applied Physics Letters 93, 021106 Jul. 2008. - H. Yoneyama, M. Yamashita, S. Kasai, K. Kawase, H. Ito,and T. Ouchi
"Membrane device for holding biomolecule samples for terahertz spectroscopy"
Opt. Commun. 281, No. 7, pp.1909--1913, Feb. 2008. - Hiromasa Ito, Koji Suizu, Tomoyu Yamashita, and Tomohisa Sato
"Random frequency accessible broad tunable terahertz-wave source using phase-matched 4-dimethylamino-N-methyl-4-stilbazolium tosylate (DAST) crystal"
Jpn. J. Appl. Phys. Vol.46, No.11, pp.7321-7324, Nov. 2007. - Hidaka T. , Ishikawa A. , Kojou J. , Ikari T. , Ishikawa Y. , Minamide H. , Kudoh A. , Nishizawa J. , and Ito H
"Adaptive optics instrumentation in submillimeter/terahertz spectroscopy with a flexible polyvinylidence fluoride cladding hollow waveguide"
Rev. Sci. Instrum. 78, 086109-1--086109-2, Aug. 2007. - Ruixiang Guo, Hiroaki Minamide, Tomofumi Ikari, Youichi Ishikawa, and Hiromasa Ito
"Terahertz-wave spectrometer based on a coherent terahertz-wave parametric generator"
Opt. Eng. Vol. 45, pp113603, Nov. 29, 2006.