不对称介质中载波包络相位相关的超快多光子现象研究

Carrier-Envelope Phase Dependence of Ultrafast Multiphoton Processes in Asymmetrical Media

研究了不对称介质中载波包络相位(CEP)相关的超快多光子过程。研究发现,通过调节周期量级超短脉冲的CEP,能够实现对超快四波混频转换效率的有效控制。而且,进一步研究发现,入射脉冲的CEP能够被极化分子介质中产生的孤子脉冲"记住",这一崭新的效应提供了一种测量未经放大周期量级超短激光脉冲CEP的新方案。另外,研究了半抛物量子阱(QW)中的载波拉比振荡效应的物理机制。

The carrier-envelope phase （CEP） dependent ultrafast multiphoton processes in polar molecule media is investigated. The conversion efficiency of four-wave mixing can be controlled by the CEP of ultrashort pulses is found. Moreover, the initial CEP of the incident ultrashort pulse propagating in a polar molecule medium can be ＂remembered＂ by the subsequent generated soliton pulse, which provides a new method to measure the CEP of nonamplified few-cycle ultrashort pulse. Furthermore, the physics mechanism of carrier-wave Rabi flopping in asymmetric semiparabolic quantum well （QW） is studied.