104 citations · 424 across the 11 of their papers we have counts for
11 papers
Lamb-dip spectroscopy of rotational levels with UTC-PD terahertz emitter
Kohei Eguchi, Takashi Arikawa, Hiroshi Ito +1
Pump-probe saturation spectroscopy in the sub-terahertz region was performed in the rotational transition (J, K) = (16, 0) <- (15, 0) for gas-phase acetonitrile molecules in the co…
Phase-resolved measurement and control of ultrafast dynamics in terahertz electronic oscillators
Takashi Arikawa, Jaeyong Kim, Toshikazu Mukai +4
As a key component for next-generation wireless communications (6G and beyond), terahertz (THz) electronic oscillators are being actively developed. Precise and dynamic phase contr…
A two-dimensional space-time terahertz memory in bulk SrTiO3
F. Blanchard, J. E. Nkeck, L. Guiramand +4
Ferroelectric materials offer unprecedented ultrafast responses and are of great interest for the development of new polarizable media under the influence of an electromagnetic fie…
Injection Locking and Noise Reduction of Resonant Tunneling Diode Terahertz Oscillator
Tomoki Hiraoka, Takashi Arikawa, Hiroaki Yasuda +5
We studied the injection-locking properties of a resonant-tunneling-diode terahertz oscillator in the small-signal injection regime with a frequency-stabilized continuous THz wave.…
Selective excitation of multipolar spoof plasmons using orbital angular momentum of light
Takashi Arikawa, Tomoki Hiraoka, Shohei Morimoto +7
The nature of light-matter interaction is governed by the spatial-temporal structures of a light field and material wavefunctions. The emergence of the light beam with transverse p…
Observation of exotic water in hydrophilic nanospace of porous coordination polymers
Tomoaki Ichii, Takashi Arikawa, Kenichiro Omoto +4
The fundamental understanding of water confined in porous coordination polymers (PCPs) is significantly important not only for their applications such as gas storage and separation…
Superradiant Decay of Cyclotron Resonance of Two-Dimensional Electron Gases
Qi Zhang, Takashi Arikawa, Eiji Kato +9
We report on the observation of collective radiative decay, or superradiance, of cyclotron resonance (CR) in high-mobility two-dimensional electron gases in GaAs quantum wells usin…
Review of Anisotropic Terahertz Material Response
T. Arikawa, Q. Zhang, L. Ren +2
Anisotropy is ubiquitous in solids and enhanced in low-dimensional materials. In response to an electromagnetic wave, anisotropic absorptive and refractive properties result in dic…
Collective Antenna Effects in the Terahertz and Infrared Response of Highly Aligned Carbon Nanotube Arrays
L. Ren, Q. Zhang, C. L. Pint +8
We study macroscopically-aligned single-wall carbon nanotube arrays with uniform lengths via polarization-dependent terahertz and infrared transmission spectroscopy. Polarization a…
Giant Tunable Faraday Effect in a Semiconductor Magneto-plasma for Broadband Terahertz Polarization Optics
T. Arikawa, X. Wang, A. A. Belyanin +1
We report on a giant Faraday effect in an electron plasma in n-InSb probed via polarization-resolved terahertz (THz) time-domain spectroscopy. Polarization rotation angles and elli…
Terahertz Coherent Control of a Landau-Quantized Two-Dimensional Electron Gas
T. Arikawa, X. Wang, D. J. Hilton +3
We demonstrate coherent control of cyclotron resonance (CR) in a two-dimensional electron gas (2DEG). We use a sequence of terahertz pulses to control the amplitude of CR oscillati…