The standard terahertz (THz) detection mechanism known as electro-optic sampling can be improved in sensitivity by biasing the polarization of the sampling field. In this work, we show theoretically and experimentally how weak signals can be amplified without inducing distortions. Our study identifies the influence of THz field strength, the polarization quality, and biasing amplitude on signal amplification and distortion. Here we present a distortion-free amplification of a factor of 28 while at the same time reducing the measurement time significantly.

中文翻译：

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在千赫重复率下有效检测电光采样中的太赫兹弱脉冲

通过偏置采样场的极化，可以提高称为电光采样的标准太赫兹（THz）检测机制。在这项工作中，我们将在理论上和实验上展示如何在不引起失真的情况下放大微弱的信号。我们的研究确定了太赫兹场强，极化质量和偏置幅度对信号放大和失真的影响。在这里，我们提出了28倍的无失真放大，同时显着减少了测量时间。