S
Shin-ichi Nakashima
Researcher at National Institute of Advanced Industrial Science and Technology
Publications - 168
Citations - 3832
Shin-ichi Nakashima is an academic researcher from National Institute of Advanced Industrial Science and Technology. The author has contributed to research in topics: Raman spectroscopy & Raman scattering. The author has an hindex of 26, co-authored 167 publications receiving 3565 citations. Previous affiliations of Shin-ichi Nakashima include Osaka University.
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Raman Investigation of SiC Polytypes
TL;DR: In this article, the plasmon LO-phonon coupled modes whose spectral profiles are used to evaluate the carrier concentration and mobility of SiC crystals are discussed, and anisotropic electronic properties of α-SiC and characteristics of heavily doped crystals are also treated.
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Emission characteristics of photoconductive antennas based on low-temperature-grown GaAs and semi-insulating GaAs.
TL;DR: Terahertz radiation was generated with several designs of photoconductive antennas fabricated on low-temperature-grown GaAs and semi-insulating GaAs, and the emission properties of the photoc conductive antennas were compared with each other.
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Raman scattering from anisotropic LO‐phonon–plasmon–coupled mode in n‐type 4H– and 6H–SiC
TL;DR: In this paper, the axial and planar modes of 6H-SiC were measured by Raman scattering at room temperature and the plasmon frequency, carrier damping, and phonon damping were deduced.
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Dynamics of Coherent Anharmonic Phonons in Bismuth Using High Density Photoexcitation
TL;DR: The time-resolved reflectivity in the intensely photoexcited Bi film is modulated by the coherent A(1g) phonon oscillation with a time-dependent oscillation period, which is attributed to an anharmonicity of the lattice potential.
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Ultrashort Electromagnetic Pulse Radiation from YBCO Thin Films Excited by Femtosecond Optical Pulse
Masayoshi Tonouchi,Masahiko Tani,Zhen Wang,Kiyomi Sakai,S. Tomozawa,Masanori Hangyo,Yoshishige Murakami,Shin-ichi Nakashima +7 more
TL;DR: In this paper, the supercurrent transient is created by the excitation of the supercarriers into quasiparticles with a femtosecond laser pulse, and freely propagated electromagnetic pulses are measured and characterized.