标题： 太赫兹时域反射光谱的鲁棒相位校正技术 显示英文标题

标题： Robust phase correction techniques for terahertz time-domain reflection spectroscopy

摘要： 我们介绍了一种系统的方法，该方法能够实现两种在反射几何中进行太赫兹时域光谱分析的稳健方法。 利用克雷默斯-克朗尼格关系结合对太赫兹电场幅度的精确实验测量，我们展示了如何即使在部分对准错误的测量情况下，也能正确地恢复同一场的相位。 我们的技术允许准确估计原则上任何反射太赫兹辐射的材料的光学特性。 我们通过提取InSb的复折射率来证明我们方法的准确性，InSb是一种在低频太赫兹范围内具有强等离子体共振的材料。 我们的技术适用于任意入射角和偏振状态。 显示英文摘要

摘要： We introduce a systematic approach that enables two robust methods for performing terahertz time-domain spectroscopy in reflection geometry. Using the Kramers-Kronig relations in connection to accurate experimental measurements of the amplitude of the terahertz electric field, we show how the correct phase of the same field can be retrieved, even in the case of partly misaligned measurements. Our technique allows to accurately estimate the optical properties of in principle any material that reflects terahertz radiation. We demonstrate the accuracy of our approach by extracting the complex refractive index of InSb, a material with a strong plasma resonance in the low-terahertz range. Our technique applies to arbitrary incidence angles and polarization states.