Simultaneous measurement of two ultrashort laser pulses from a single spectrogram in a single shot
Simultaneous measurement of two ultrashort laser pulses from a single spectrogram in a single shot
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DOI：
10.1364/josab.14.000935
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发表时间：
1997-04-01
影响因子：
1.9
通讯作者：
Clement, TS
中科院分区：
文献类型：
--
作者：
Kane, DJ;Rodriguez, G;Clement, TS
频率分辨光学选通（FROG）是一种产生超短激光脉冲频谱图的技术。利用迭代相位恢复算法求解光谱图的相位，可以确定超短激光脉冲的强度和相位。这项工作提出了一种皮尤相位检索算法，检索探头和门脉冲独立转换的FROG相位检索问题的特征向量问题。新算法具有较强的鲁棒性和通用性，理论上用合成数据集进行了验证，实验上用单激发偏振门FROG进行了验证。我们独立地和同时表征的电场振幅和相位的脉冲（探头），通过200毫米的BK 7玻璃和一个不变的脉冲（门）从放大的钛：蓝宝石激光的振幅。当200 mm BK 7玻璃的影响从探针中数学地去除时，测量的栅极和计算的预啁啾探针之间有很好的一致性。(C)1997年，美国光学学会。
Frequency-resolved optical gating (FROG) is a technique that produces a spectrogram of an ultrashort laser pulse. The intensity and phase of the ultrashort laser pulse can be determined through solving for the phase of the spectrogram with an iterative, phase-retrieval algorithm. This work presents a pew phase-retrieval algorithm that retrieves both the probe and the gate pulses independently by converting the FROG phase-retrieval problem to an eigenvector problem. The new algorithm is robust and general, It is tested theoretically by use of synthetic data sets and experimentally by use of single-shot, polarization-gate FROG. We independently and simultaneously characterize the electric field amplitude and phase of a pulse (probe) that was passed though 200 mm of BK7 glass and the amplitude of an unchanged pulse (gate) from an amplified Ti:sapphire laser. When the effect of the 200 mm of BK7 glass; was removed mathematically from the probe, there was good agreement between the measured gate and the calculated, prechirped probe. (C) 1997 Optical Society of America.