[OPTICAL REVIEW Vol. 5, No. 5 (1998) 263-266]
Constructive and Destructive Two-Pulse Excitation Investigated with a White-Light Michelson Interferometer
Takao FUJI,1 Sher ALAM,2 Toshiaki HATTORI1 and Hiroki NAKATSUKA1,*
1Institute of Applied Physics, University of Tsukuba, Tsukuba, Ibaraki, 305-8573 Japan, 2KEK Tsukuba, Ibaraki, 305-0801 Japan
(Received April 9, 1998; Accepted July 17, 1998)
Linear propagation of two pulses through methanol solution of aluminum phthalocyanine chloride is investigated using a modified white-light Michelson interferometer. The observed coherence time of the white light is 6 fs, and the separation between the two-excitation pulses is set to about 10 fs. The excitation is dependent on the phase-relation between the two pulses. We have observed an enhancement of the excitation when the two pulses are in-phase and strong suppression of the excitation when the two pulses are out of phase by p.
Key words : two-pulse excitation, Michelson interferometer, phase control, ultrashort pulse propagation, Bloch vector