Property of the phase of the reemitted field in the semiconductor quantum wells (QWs) excited by femtosecond pulse train is investigated. It is shown that the phase evolution of the reemitted field is controlled by the relative phase between the successive pulses of the incident train. For all the odd pulses excitation, the reemitted field is from out-of-phase to in-phase, then again to out-of-phase with the incident pulses, whereas for all the even pulses excitation, the situation is the opposite, i.e., it is from in-phase to out-of-phase, then again to in-phase with the incident pulses.
© 2007 Chinese Optics Letters
(040.6070) Detectors : Solid state detectors
(140.0140) Lasers and laser optics : Lasers and laser optics
(190.0190) Nonlinear optics : Nonlinear optics
(320.0320) Ultrafast optics : Ultrafast optics
Jian Luo, Shangqing Gong, Yueping Niu, Xiaohong Song, Jun Qian, and Ruxin Li, "Phase evolution of the reemitted field in the semiconductor quantum wells under the femtosecond pulse train intersubband excitation," Chin. Opt. Lett. 5, 304-307 (2007)