光子回波的求解及其应用

为了深入理解光子回波产生的物理机制,通过采用预报-校正四阶龙格-库塔数值法求解非均匀展宽二能级体系的Maxwell-Bloch方程,建立了准确计算薄样品和厚样品介质光子回波信号强度的方法。得到了二脉冲、三脉冲和多脉冲光子回波信号的强度特性,并研究了弛豫时间、初始入射光脉冲的面积、失谐量以及样品的厚度等对光子回波信号的影响,进一步研究了编码脉冲在数据存储和读取中的应用。计算结果很好地显示了光子回波信号的特性,所建立的方法对光子回波信号的求解具有普适性。

Numerical Solution and Applications of Photon Echo

Important applications in optical information storage and processing based on photon echo have been developed.An accurate and effective numerical method to solve the Maxwell-Bloch equations that are used to describe the optical pulse propagation and interaction with inhomogeneously broadened two-level medium will be introduced. Two-pulse photon echo is calculated then photon echo and multiple-pulse photon echoes are stimulated in optical thin (thick) media by using the method, and the physical properties of those echoes are analyzed. The results show that the approach to storage and retrieval of light using multiple-pulse photon echoes based on stimulated photon echo is an effective mode.