55 citations · 147 across the 8 of their papers we have counts for
8 papers
Enhanced Third-Harmonic Generation in Diamond Photonic Crystal Slabs via Doubly Resonant Quasi-Bound States in the Continuum
Sangmin Ji, Satoshi Iwamoto, Hideki Gotoh
We propose and numerically demonstrate doubly resonant third-harmonic generation (THG) in a diamond photonic crystal (PhC) slab, in which the fundamental harmonic (FH) and the thir…
Strain-induced exciton decomposition and anisotropic lifetime modulation in a GaAs micromechanical resonator
Ryuichi Ohta, Hajime Okamoto, Takehiko Tawara +2
We demonstrate mechanical modulations of the exciton lifetime by using vibrational strain of a gallium arsenide (GaAs) resonator. The strain-induced modulations have anisotropic de…
Coherent coupling of dark and bright excitons with vibrational strain
Ryuichi Ohta, Hajime Okamoto, Takehiko Tawara +2
In many physical systems, there are specific electronic states called dark state that are protected from the rapid radiative decay imposed by the system symmetry. Although their lo…
Valley-antisymmetric potential in graphene under dynamical deformation
Ken-ichi Sasaki, Yasuhiro Tokura, Hideki Gotoh
When graphene is deformed in a dynamical manner, a time-dependent potential is induced for the electrons. The potential is antisymmetric with respect to valleys, and some straightf…
Topological Raman Band in Carbon Nanohorn
Ken-ichi Sasaki, Yoshiaki Sekine, Kouta Tateno +1
Raman spectroscopy has been used in chemistry and physics to investigate the fundamental process involving light and phonons (quantum of lattice vibration). The carbon nanohorn int…
Optical characteristics of single wavelength-tunable InAs/InGaAsP/InP(100) quantum dots emitting at 1.55 um
N. I. Cade, H. Gotoh, H. Kamada +3
We have studied the emission properties of individual InAs quantum dots (QDs) grown in an InGaAsP matrix on InP(100) by metal-organic vapor-phase epitaxy. Low-temperature microphot…