We demonstrate experimentally and numerically that the quantum wake of molecular alignment induced by impulsive rotational Raman excitations with femtosecond pump pulses produces observable phase modulations on femtosecond probe pulses. This leads to a spectral red- or blueshift of the probe pulses when they are properly delayed around the rising or falling edge of the half-revival time of the molecular alignment, respectively.
© 2009 Optical Society of America
Original Manuscript: November 17, 2008
Revised Manuscript: February 5, 2009
Manuscript Accepted: February 5, 2009
Published: March 12, 2009
Hua Cai, Jian Wu, Arnaud Couairon, and Heping Zeng, "Spectral modulation of femtosecond laser pulse induced by molecular alignment revivals," Opt. Lett. 34, 827-829 (2009)