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首页> 外文期刊>Applied optics >Characterization of Ultrashort Pulses by a Modified Grating-eliminated No-nonsense Observation of Ultrafast Incident Laser Light E Fields (GRENOUILLE) Method
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Characterization of Ultrashort Pulses by a Modified Grating-eliminated No-nonsense Observation of Ultrafast Incident Laser Light E Fields (GRENOUILLE) Method

机译：超短脉冲的特征通过改进的光栅消除无意义的超快入射激光E场观察（GRENOUILLE）方法

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摘要

The measurement and characterization of ultrashort laser pulses remains an arduous task. The most commonly used pulse-measurement method is known as frequency-resolved optical gating (FROG), and another version with great experimental simplification and low-priced setup is known as gratingeliminated no-nonsense observation of ultrafast incident laser light E fields (GRENOUILLE). Nevertheless, there is interest in elaborating other, more accessible or simpler and cheaper, setups with equal or better assets. We explored modification of the GRENOUILLE method in which we replaced the original Fresnel biprism with a beam splitter and two mirrors and used a cheap webcam to measure the pulse traces. We have evaluated our system, and we propose a method to correct border effects caused by the beam intensity's profile based on the characterization of three pulse classes: Fourier-transform limited, double, and chirped. We compare the recovered electric field with further spectral and second-order correlation data of the corresponding pulses.
机译：超短激光脉冲的测量和表征仍然是一项艰巨的任务。最常用的脉冲测量方法被称为频率分辨光学选通（FROG），另一种具有极大的实验简化和低价设置的方法被称为对超快入射激光E场进行光栅消除的无意义观测（GRENOUILLE） 。然而，有兴趣开发其他具有相同或更好资产的，更易于访问的或更简单或更便宜的设置。我们探索了对GRENOUILLE方法的修改，在该方法中，我们用分束器和两个反射镜替换了原始的菲涅耳双棱镜，并使用了便宜的网络摄像头来测量脉冲轨迹。我们已经评估了我们的系统，并根据三种脉冲类别的特征提出了一种校正由光束强度轮廓引起的边界效应的方法：傅里叶变换受限，双重和线性脉冲。我们将恢复的电场与相应脉冲的进一步频谱和二阶相关数据进行比较。

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