1. a Institute for Ultrafast Spectroscopy and Lasers, New York State Center for Advanced Technology for Ultrafast Photonic Materials and Applications
2. b Department of Physics , The City College and The Graduate School of The City University of New York , New York , NY , 10031 Phone: Fax:
3. c Department of Applied Sciences, The College of Staten Island , The City University of New York , 2800 Victory Boulevard, Staten Island , NY , 10314