1. Division of Chemistry and Biological Chemistry, and Division
of Physics and Applied Physics, School of Physical and Mathematical
Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
2. Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627, United States
3. Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
4. Advanced Ultrafast
Laser Research Center, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan
5. JST, CREST, K’Gobancho, 7 Gobancho, Chiyoda-ku, Tokyo 102-0076, Japan
6. Department
of Electrophysics, National Chiao-Tung University, Hsinchu 300, Taiwan
7. Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565-0971, Japan
8. Institute of Materials Research & Engineering, A*STAR, 3 Research Link, Singapore 117602, Singapore
9. Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States