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Interferometric time-domain ptychography for ultrafast pulse characterization

机译：用于超快脉冲表征的干涉时间域PTYCHOGUPT

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摘要

A novel pulse characterization method is presented, favorably combining interferometric frequency-resolved optical gating (FROG) and time-domain ptychography. This new variant is named ptychographic-interferometric frequency-resolved optical gating (pFROG). The measurement device is simple, bearing similarity to standard second-harmonic FROG, yet with a collinear beam geometry and an added bandpass filter in one of the correlator arms. The collinear beam geometry allows tight focusing and circumvents possible geometrical distortion effects of noncollinear methods, making pFROG especially suitable for the characterization of unamplified few-cycle pulses. Moreover, the direction-of-time ambiguity afflicting most second-order FROG variants is eliminated. Possible group delay dispersion of pulses leads to a characteristic tilt in the pFROG traces, allowing the detection of uncompensated dispersion without a retrieval. Using nanojoule, three-cycle pulses at 800 nm, the pFROG method is tested, and the results are compared with spectral phase interferometry for direct electric field reconstruction measurements. Measured pulse durations agree within a fraction of a femtosecond. As a further test, the pFROG measurements are repeated with added group delay dispersion, and found to accurately reproduce the dispersion computed with Sellmeier equations. (C) 2017 Optical Society of America
机译：提出了一种新颖的脉冲表征方法，有利地组合干涉频率分辨光学门控（FROG）和时域PTYCHOGUCH。该新变型名为PTYChrapue干涉频率分辨光学门控（PFROG）。测量装置简单，与标准二次谐波的相似性，但是在一个相关器臂中的一个共线梁几何形状和添加的带通滤波器。共线梁几何形状允许紧密的聚焦和避免可能的非可折叠方法的几何变形效果，使PFROG特别适用于未加入的少年脉冲的表征。而且，消除了大多数二阶青蛙变体的时间歧义。脉冲的可能的组延迟分散导致Pfroot迹线中的特征倾斜，允许在没有检索的情况下检测未补偿的分散。使用纳米joule，在800nm处的三循环脉冲，测试Pfroot方法，并将结果与​​光谱相干涉测量法进行比较，用于直接电场重建测量。测量的脉冲持续时间在飞秒的一小部分内同意。作为进一步的测试，用添加的组延迟色散重复Pffrog测量，并发现能够精确地再现与Sellmeier方程计算的色散。 （c）2017年光学学会

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  • 来源
    《Optics Letters》 |2017年第11期|共4页
  • 作者

    Hyyti Janne; Escoto Esmerando; Steinmeyer Guenter; Witting Tobias;

  • 作者单位

    Max Born Inst Nonlinear Opt &

    Short Pulse Spect Max Born Str 2A D-12489 Berlin Germany;

    Max Born Inst Nonlinear Opt &

    Short Pulse Spect Max Born Str 2A D-12489 Berlin Germany;

    Max Born Inst Nonlinear Opt &

    Short Pulse Spect Max Born Str 2A D-12489 Berlin Germany;

    Max Born Inst Nonlinear Opt &

    Short Pulse Spect Max Born Str 2A D-12489 Berlin Germany;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 计量学;光学;
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