The FROG Algorithm
The FROG Algorithm
复制标题
青蛙算法
DOI：
--
复制
发表时间：
2000
期刊：
影响因子：
--
通讯作者：
R. Trebino
中科院分区：
文献类型：
--
作者：
M. Krumbuegel;R. Trebino
虽然可以从其FROG轨迹中收集有关脉冲的许多定性信息，但我们通常希望获得更多的定量信息，特别是强度和相位与时间或频率的关系。不幸的是，没有可靠的封闭形式的解决方案的频谱图反转是已知的（特别是当脉冲门本身）。我们在第5章中看到，从FROG轨迹中恢复脉冲等价于2D相位恢复问题，并且存在算法来实现这一点。事实上，几乎所有的几个可用的FROG算法修改相位检索算法。
While much qualitative information about a pulse can be gleaned from its FROG trace, we’d usually like to obtain more quantitative information, specifically, the intensity and phase vs. time or frequency. Unfortunately, no reliable closed-form solution for inversion of a spectrogram is known (especially when the pulse gates itself). We saw in Chapter 5 that retrieving the pulse from a FROG trace is equivalent to the 2D phase retrieval problem, and that algorithms exist for doing this. Indeed, almost all of the several available FROG algorithms are modified phase-retrieval algorithms.