1. State Key Laboratory of Integrated Optoelectronics College of Electronic Science and Engineering Jilin University 2699 Qianjin Street Changchun 130012 P. R. China
2. Femtosecond Laser Laboratory State Key Laboratory of Superhard Materials College of Physics Jilin University Changchun 130012 P. R. China
3. Key Laboratory of Materials Physics of Ministry of Education Department of Physics and Engineering Zhengzhou University Zhengzhou 450052 P. R. China
4. State Centre for International Cooperation on Designer Low‐carbon & Environmental Materials School of Materials Science and Engineering Zhengzhou University Zhengzhou 450001 P. R. China