Isao Masuda

Improvement of solar cell performance using PbS quantum dot superlattices with iodine ligands

Kohki Mukai, Shoichiro Ikeda, Issei Pribyl, H. Sato et autres

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Finite element simulation of warm deep drawing of aluminium alloy sheet when accounting for heat conduction

Hirohiko Takuda, K. Mori, Isao Masuda, Yohei Abe et autres

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A current sensor using the Faraday effect in optical fiber manufactured from flint glass

Kiyoshi Kurosawa, Satoru Yoshida, Kazuo Sakamoto, Isao Masuda et autres

For application to current monitoring in electric power facilities, the authors have been developing a current sensor utilizing the Faraday effect of an optical fiber manufactured from flint glass having a very small stress-optic coefficient. This paper describes the result of study …

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Extremely Small Stress-Optic Coefficient Glass Single Mode Fibers for Current Sensor

Toshiharu Yamashita, Atsushi Watabe, Isao Masuda, Kazuo Sakamoto et autres

Single mode fibers for the Faraday effect current sensor have been developed with extremely small stress-optic coefficient glass for core. The properties of the fiber and the characteristics of the sensor system constructed with the fiber exhibited the usefulness of the fiber …

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A Current Sensor Using the Faraday Effect in Optical Fiber Manufactured from Flint Glass

Kiyoshi Kurosawa, Satoru Yoshida, Kazuo Sakamoto, Isao Masuda et autres

For application to current monitoring in electric power facilities, the authors have been developing a current sensor utilizing the Faraday effect of an optical fiber manufactured from flint glass having very small photo-elastic constant. This paper describes the result of study on …

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Optical fibre-type current sensor utilizing the Faraday effect of the flint glass fibre

Kiyoshi Kurosawa, Satoru Yoshida, Kazuo Sakamoto, Isao Masuda et autres

The basic system of the optical fiber-type Faraday effect current sensor for electric power apparatus has been developed. According to the experiments, it became clear that the developed system showed excellent polarization characteristics and small tempereture dependence. Though the vibration dependent fluctuation …

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Low-loss fluorozirco-aluminate glass fiber

K. Itoh, Kuniaki Miura, Isao Masuda, M. Iwakura et autres

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2.7-um diode-pumped fiber laser

H. Yanagita, H. Toratani, Toshiharu T. Yamashita, Isao Masuda

The performances of diode-pumped 2.7?m fiber laser have been studied. From the population inversion estimated for a fluorozircoaluminate (AZF) glass with different ErF3 doping, a higher gain was expected for a higher ErF3 doping. The laser performances were improved by adjusting fiber …

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Diode-pumped Er3+ glass laser at 2.7 um

H. Yanagita, H. Toratani, Toshiharu T. Yamashita, Isao Masuda

Diode-pumped cw laser oscillations in the 2.7 micrometers region were obtained using 10 mol% ErF3 doped fluorozircoaluminate glass fibers. Lasing threshold proportionately decreased with decreasing fiber core diameter. The minimum threshold observed for 110 micrometers core fiber was approximately 10 mW in …

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Diode laser pumped Er 3+ fibre laser operation between 2.7–2.8 μm

H. Yanagita, Isao Masuda, T. Yamashita, H. Toratani

CW laser operation in the 2.7–2.8 μm region has been observed in Er3+ doped fluorozircoaluminate glass fibres by diode laser pumping at 0.8 μm. An absorbed threshold power of 10 mW and an output laser power of 2.1 mW with a slope …

Nd- and Er-doped phosphate glass fiber lasers

Tsukasa Yamashita, S. Amano, Isao Masuda, T. Izumitani et autres

Single-mode silica laser fibers doped with rare earths have been studied for their use in optical communication systems.1,2 Silica glass, however, may not be suitable as a laser host glass because of its low-stimulated-emission cross section and low limit of dopant level. …

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Acousto-optical properties of tellurite glass

T. Izumitani, Isao Masuda

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