论文标题
石英中的光学矫正和电光抽样
Optical Rectification and Electro-Optic Sampling in Quartz
论文作者
论文摘要
我们在z-cut alpha-quartz中报告了电声抽样（EOS）响应（EOS）响应（THZ）光学整流（OR）。由于其有效的二阶非线性较小，因此可以忠实地测量具有几个mV/cm电场强度的强烈THZ脉冲波形，而无需饱和效应。它的OR和EOS响应都广泛，扩展长达〜8 THz。令人惊讶的是，后者的响应与晶体厚度无关，这是对石英总二阶非线性敏感性强的表面贡献的合理指示。我们的研究引入了薄石英板作为可靠的无回声，高场THZ检测的可靠THZ电磁介质。
We report electro-optic sampling (EOS) response and terahertz (THz) optical rectification (OR) in z-cut alpha-quartz. Due to its small effective second-order nonlinearity, echo-free waveform of intense THz pulses with a few MV/cm electric-field strength can be measured faithfully with no saturation effect. Both its OR and EOS responses are broad with extension up to ~8 THz. Strikingly, the latter responses are independent of the crystal thickness, a plausible indication of strong surface contribution to the total second-order nonlinear susceptibility of quartz. Our study introduces thin quartz plates as the reliable THz electro-optic medium for echo-free, high field THz detection.
