Search Results - "Ikushima, Akira J."

Refractive index and density changes in silica glass by halogen doping by Kakiuchida, Hiroshi, Sekiya, Edson. H., Shimodaira, Noriaki, Saito, Kazuya, Ikushima, Akira. J.

“…The refractive index and density of halogen-doped silica glasses were measured as a function of fictive temperature, and the relationship between the…”
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Structural relaxation in sputter-deposited silica glass by Hirose, Tomohiro, Saito, Kazuya, Ikushima, Akira J.

“…We investigated structural relaxation below the glass transition temperature in sputter-deposited silica glass. Structural relaxation was obtained from…”
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Local Structural Relaxation around OH in Silica Glass by Kakiuchida, Hiroshi, Saito, Kazuya, Ikushima, Akira J.

“…IR absorption spectra in bulk SiO2 glasses with various OH contents were measured. IR absorption value at around 3600 cm-1, a direct indication of SiO4 local…”
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Thermally induced second-order nonlinearity in silica-based glasses by Fokine, Michael, Saito, Kazuya, Ikushima, Akira J.

“…This letter presents the observation of second-harmonic generation in pure silica and germanium-doped glass samples after heat treatment at elevated…”
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Substrate Effect on Poling Process of Nonlinear Optical Polymer Films by Suzuki, Akiyoshi, Yoshihiko Matsuoka, Yoshihiko Matsuoka, Akira J. Ikushima, Akira J. Ikushima

“…The effect of the substrate on the corona poling process of dye-doped poly(methyl methacrylate) films is investigated for nonlinear optics (NLO). It is found…”
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INDUCED DEFECTS AND INCREASE OF SECOND-ORDER NONLINEARITY IN ULTRAVIOLET-POLED GeO2-SiO2 GLASS by Ohama, M, Fujiwara, T, Ikushima, A J

“…Authors report on enhancement by thermal defects control of the second-order optical nonlinearity in GeO2-SiO2 glass induced by ultraviolet (uv) poling. The…”
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Refractive Index, Density and Polarizability of Silica Glass with Various Fictive Temperatures by Kakiuchida, Hiroshi, Saito, Kazuya, Ikushima, Akira J.

“…The refractive index and density of silica glass were measured for various fictive temperatures. They both increase without any local maxima, as the fictive…”
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Refractive index and density in F- and Cl-doped silica glasses by Kakiuchida, Hiroshi, Shimodaira, Noriaki, Sekiya, Edson H., Saito, Kazuya, Ikushima, Akira J.

“…The refractive index and density of fluorine- and chlorine-doped silica glasses were measured as functions of fictive temperature. The halogen concentrations…”
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Rayleigh Scattering in Fluorine-Doped Silica Glass by Kakiuchida, Hiroshi, Saito, Kazuya, Ikushima, Akira J.

“…The Rayleigh scatterings of F-doped SiO2 glasses as a function of fictive temperature were examined. The scattered intensity of pure SiO2 glass increases…”
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Structural change of OH-free fused quartz tube by blowing with hydrogen–oxygen flame by Kuzuu, Nobu, Kokubo, Yosuke, Nishimura, Tsutomu, Serizawa, Izumi, Zeng, Ling-Hai, Fujii, Kenji, Yamaguchi, Makoto, Saito, Kazuya, Ikushima, Akira J.

“…The effect of blowing with a hydrogen–oxygen flame on the structure of an OH-free fused quartz tube was studied by microscopic spectroscopy. The number of OH…”
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Studies on Phase Transitions by AC Calorimetry by Hatta, Ichiro, Ikushima, Akira J.

“…As examples of the best use of the so-called AC calorimetry technique, several results are described from various viewpoints. The behavior of heat capacity at…”
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Origin and properties of second-order optical non-linearity in ultraviolet-poled GeO2-SiO2 glass by FUJIWARA, T, MATSUMOTO, S, OHAMA, M, IKUSHIMA, A. J

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Valence and conduction band edges of metal-phthalocyanines and carrier behavior by Ikushima, Akira J., Kanno, Toshiyuki, Yoshida, Shuji, Maeda, Akihiro

“…The energy levels of the valence and conduction band edges of various metal-phthalocyanines (MPcs) have been determined by using photoelectron emission and…”
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Effect of Chlorine on Rayleigh Scattering Reduction in Silica Glass by Kakiuchida, Hiroshi, Sekiya, Edson H., Saito, Kazuya, Ikushima, Akira J.

“…The Rayleigh-scattered light intensities of SiO2 glasses containing Cl with concentrations from 0 to 1.8 mol% were measured. The scattered intensity was found…”
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Specific Volume of Fluorine-Doped Silica Glass with Various Fictive Temperatures by Kakiuchida, Hiroshi, Saito, Kazuya, Ikushima, Akira J.

“…The specific volume of silica glass was measured as a function of fictive temperature and the concentration of fluorine dopant up to 1550°C and 7.2 mol%,…”
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Thermal equilibrium of Ge-related defects in a GeO2-SiO2 glass by Takahashi, Masahide, Fujiwara, Takumi, Kawachi, Taiji, Ikushima, Akira J.

“…In a 15.7 GeO2⋅84.3 SiO2 glass prepared by a vapor axial deposition method, optical absorptions at 4.92 and 5.08 eV were observed from 300 to 600 K. The…”
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Decay of ultraviolet-induced optical absorption in Ge-doped SiO2 glass by Ohama, Motoshi, Fujiwara, Takumi, Ikushima, Akira J.

“…We report quantitative measurements on the decay of optical absorption at various elevated temperatures in ultraviolet (UV)-irradiated SiO2 glasses doped with…”
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Properties of Bi-Sr-Ca-Mg-Cu-O superconductors by MOROISHI, K, OGAWA, Y, IKUYSHIMA, A. J

“…The superconducting properties of Bi 1 Sr 1- x Ca 1- x Mg 2 x Cu 2 O y (0≦ x ≦0.33) were investigated. Electrical resistivity and X-ray diffraction suggest…”
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Sound velocity and attenuation in YBa2Cu3Oy by SUZUKI, M, OKUDA, Y, IWASA, I, IKUSHIMA, A. J, TAKABATAKE, T, NAKAZAWA, Y, ISHIKAWA, M

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Construction and performance of a rigid massive copper nuclear demagnetization stage by OKUDA, Y, IKUSHIMA, A. J

“…A massive copper rod was machined to form a single-stage nuclear demagnetization stage consisting of a large number of 1.5 mm-thick-fins separated by slits 0.5…”
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