1. Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
2. State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
3. Photonics Institute, Vienna University of Technology, Gusshausstrasse 27, A-1040 Vienna, Austria
4. Center for Optics, Photonics and Laser (COPL) & Department of Physics, Engineering Physics and Optics, Laval University, Quebec City, QC, Canada G1 V 0A6