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High-Sensitivity, Simple Frequency-Resolved-Optical-Gating Device

机译:高灵敏度、简单的频率分辨光门控器件

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摘要

We introduce a practical self-referenced device for the complete temporal intensity-and-phase measurement of few-femtojoule-level fs and ps pulses based on the simple version of frequency-resolved-optical gating, called GRENOUILLE. We replace the usual crossed-beam line-focus geometry with a point-focus near-collinear-beam geometry and a traditional delay line that allows a longer path length in the nonlinear medium, yielding greater sensitivity. As an initial demonstration of the device, we measured moderately complex pulses at energies as weak as 24 fJ with high signal-to-noise ratio. We confirmed the results measured using our technique to that of a standard GRENOUILLE and a high-resolution spectrometer.
机译:我们介绍了一种实用的自参考设备,用于基于频率分辨光学门控的简单版本(称为GRENOUILLE)的几飞焦电平fs和ps脉冲的完整时间强度和相位测量。我们用点聚焦近共线束几何和传统的延迟块取代了通常的交叉光束线焦点几何形状,该延迟块允许在非线性介质中具有更长的路径长度,从而产生更高的灵敏度。作为该器件的初步演示,我们测量了能量低至 24 fJ 且信噪比高的中等复杂脉冲。我们将使用我们的技术测量的结果与标准GRENOUILLE和高分辨率光谱仪的结果进行了确认。

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