1. Department of Chemistry, Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
2. Department of Electrical Engineering and Electronics, Osaka Sangyo University, 3-1-1 Nakagaito, Daito, Osaka 574-8530, Japan
3. Chemical Lab. Takasago Inst. Mitsubishi Heavy Industry Ltd., 2-1-1 Niihama, Arai, Takasago, Hyogo 676-0008, Japan
4. Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565-0871, Japan