| Affiliation: | 1. Kyushu Institute of Technology, 2-4 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0196, Japan;2. Tokuyama Corporation, Shibuya 3-chome, Shibuya-ku, Tokyo 150-8383 Japan;3. Tohoku Univ., 2-1-1 Katahira, Sendai 980-8577, Japan;1. National Institute for Laser, Plasma and Radiation Physics, Laboratory of Solid-State Quantum Electronics, Bucharest R-077125, Romania;2. Doctoral School of Physics, University of Bucharest, Romania;3. University of Bucharest, Faculty of Physics, Bucharest R-077125, Romania;1. School of Electrical and Electronic Engineering, Wuhan Polytechnic University, Wuhan 430023, People?s Republic of China;2. School of Physics and Electronics, Henan University, Kaifeng 475004, People?s Republic of China;3. School of Science, Hubei Province Key Laboratory of Intelligent Robot, Wuhan Institute of Technology, Wuhan 430073, People?s Republic of China;4. Wuhan National Laboratory for Optoelectronics and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People?s Republic of China |
