1. Osaka Metropolitan University, Sugimoto Wing, formerly Osaka City University, 3-3-128 Sugimoto, Sumiyoshi,Division of Physics and Electronics, Graduate School of Engineering,Osaka,558-8585
2. Osaka City University (Currently Osaka Metropolitan University), 3-3-138 Sugimoto, Sumiyoshi,Department of Applied Physics,Osaka,Japan,558-8585