Pearce Jeremy, Jian Zhongping, Mittleman Daniel M
Department of Electrical and Computer Engineering, MS 366, Rice University, Houston, Texas 77251-1892, USA.
Opt Lett. 2004 Dec 15;29(24):2926-8. doi: 10.1364/ol.29.002926.
We describe measurements of polarization dynamics as a probe of multiple scattering of photons in a random medium by use of single-cycle terahertz pulses. We measure the degree of polarization and correlate it directly with the single-scattering regime in the time domain. We also measure the evolution of the temporal phase of the radiation and show that the average spectral content depends on the state of polarization. In the case of broadband radiation, this effect can be used to distinguish photons that have been scattered a few times from those that are propagating diffusively.
我们描述了利用单周期太赫兹脉冲对随机介质中光子多次散射进行探测时的偏振动力学测量。我们测量偏振度，并将其与时域中的单次散射区域直接关联起来。我们还测量了辐射时间相位的演变，并表明平均光谱内容取决于偏振状态。在宽带辐射的情况下，这种效应可用于区分经过几次散射的光子和漫射传播的光子。
