Author Affiliations

Feng Liu,^a) Y. X. Shan,^a) H. Savage,^b) A. S. Heerdt,^c) S. Schantz,^b) E. Celmer,^d) and R. R. Alfano^a)

^a)Institute for Ultrafast Spectroscopy and Lasers, New York State Center of Advanced Technology for Ultrafast Photonic Materials and Applications, Department of Physics and Department of Electrical Engineering, The City College and the Graduate Center of the City University of New York, New York, NY 10031

^b)Memorial Sloan Kettering Cancer Center, Head and Neck Service, 425 East 67th Street, New York, NY 10021

^c)Memorial Sloan Kettering Cancer Center, Breast Service, 425 East 67th Street, New York, NY 10021

^d)St. Vincent Medical Center of Richmond, Staten Island, NY 10310