Controlling the dissociative ionization of ethanol with 800 and 400 nm two-color femtosecond laser pulses.
Ethanol molecules were irradiated with a pair of temporally overlapping ultrashort intense laser pulses (10(13)-10(14) Wcm(2)) with different colors of 400 and 800 nm, and the dissociative ionization processes have been investigated. The yield ratio of the C-O bond breaking with respect to the C-C bond breaking was varied in the range of 0.17-0.53 sensitively depending on the delay time between the two laser pulses, and the absolute value of the yield of the C-O bond breaking was found to be increased largely when the Fourier-transform limited 800 nm laser pulse overlaps the stretched 400 nm laser pulse, demonstrating an advantage of the two-color intense laser fields in controlling chemical bond breaking processes.
Yazawa
H
H
Department of Electronics and Electrical Engineering, Faculty of Science and Technologies, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan.
Shioyama
T
T
Suda
Y
Y
Yamanaka
M
M
Kannari
F
F
Itakura
R
R
Yamanouchi
K
K