1. Graduate School of Engineering, Department of Electrical, Electronics and Computer Engineering, Chiba Institute of Technology
2. Division of Electronic Light Application and Development, Akita Industrial Technology Center
3. Graduate School of Engineering, Chiba Institute of Technology
4. Department of Advanced Materials Science and Engineering, Faculty of Engineering, Chiba Institute of Technology
5. Department of Electrical and Computer Engineering, Faculty of Engineering, Shinshu University
6. Department of Electrical and Electronic Engineering, Faculty of Engineering, Chiba Institute of Technology