We study the vibrational energy relaxation (VER) and collisional dephasing as channels of coherence loss in a vibrational mode that is selectively excited using chirped pulse adiabatic passage in the Raman configuration. Based on the dressed state picture analysis we propose a method to reduce decoherence using femtosecond chirped pulse trains. When applied with a period close to the VER time, the pulse trains allow one to sustain high coherence in the selected vibrational mode.
© 2008 Optical Society of America
Original Manuscript: June 20, 2008
Revised Manuscript: August 26, 2008
Manuscript Accepted: August 27, 2008
Published: September 30, 2008
Svetlana A. Malinovskaya, "Prevention of decoherence by two femtosecond chirped pulse trains," Opt. Lett. 33, 2245-2247 (2008)