Institution: | 1. Department of Electrical and Electronic Engineering, Ibaraki University, 4-12-1 Nakanarusawa, Hitachi, Ibaraki, 316-8511, Japan 2. Electrical and Computer Engineering, University of Kentucky, Lexington, KY, 40506-0046, USA 3. Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka, 565-0871, Japan
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