手征介质中的光传输
Light propagation in chiral media
摘要：
讨论了光在手征介质中的传播。推导了探测脉冲在手征介质中传播的波动方程，并利用慢变包络近似在傅立叶空间中解析求解。我们的分析揭示了不同的介质响应系数对传播动力学的影响。将这些结果应用到一个具体的示例系统中，我们表明，手性相互作用已经成为重要的实验参数范围内的稀蒸汽。的手征性呈现的传播动力学敏感的相位的应用领域，我们表明，这种相位依赖性使一个控制脉冲的演变过程中，通过介质的传播。我们的研究结果表明，磁场分量的探测光束可以至关重要地影响系统的动力学，即使它耦合到介质只有微弱的。
英文摘要：
Light propagation in chiral media is discussed. We derive the wave equations for a probe pulse propagating through a chiral medium, and solve them analytically in Fourier space using the slowly varying envelope approximation. Our analysis reveals the influence of the different medium response coefficients on the propagation dynamics. Applying these results to a specific example system, we show that chiral interactions already become important at experimentally accessible parameter ranges in dilute vapors. The chirality renders the propagation dynamics sensitive to the phase of the applied fields, and we show that this phase-dependence enables one to control the pulse evolution during its propagation through the medium. Our results demonstrate that the magnetic field component of a probe beam can crucially influence the system dynamics even if it couples to the medium only weakly.
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