Application of Wigner Distribution Function for THz Propagation Analysis.
Application of Wigner Distribution Function for THz Propagation Analysis.
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DOI：
10.3390/s22010240
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发表时间：
2021-12-29
期刊：
影响因子：
--
通讯作者：
Friedman A
中科院分区：
文献类型：
--
作者：
Gerasimov M;Dyunin E;Gerasimov J;Ciplis J;Friedman A
建设宽可调谐的广谱太赫兹辐射源传输线不是一项简单的任务。通过自制的仿真，我们为将来使用TL设计提供了一个平台。TL被设计为施莱辛格家族紧凑型加速器、辐射源和应用中心（FEL）创新加速器建设的一个组成部分。我们开发了一个三维空间频率工具来分析辐射脉冲。源边缘的总电磁场在频域中用腔本征模表示。然而，任何脉冲都可以不考虑其数学函数而使用，这是本工作的重点。唯一的要求是原始脉冲的存在。该电磁场通过维格纳变换在任何所需分辨率下转换为几何光学射线表示。Wigner的表示允许我们描述未来传播中的场演化动力学，这使我们能够确定TL的初始设计。通过射线表示电磁场可以访问射线跟踪方法和未来处理，在线性和非线性制度下操作。这允许图形卡和并行处理的快速工作，提供了很大的灵活性，并作为未来的准备，使我们能够应用先进的库，如机器学习。利用该平台研究了自由电子激光器在不同工作参数下产生多模辐射的相位、幅度和光谱特性。
The construction of a transmission line (TL) for a wide tunable broad-spectrum THz radiation source is not a simple task. We present here a platform for the future use of designs of the TL through our homemade simulations. The TL is designed to be a component of the construction of an innovative accelerator at the Schlesinger Family Center for Compact Accelerators, Radiation Sources and Applications (FEL). We developed a three-dimensional space-frequency tool for the analysis of a radiation pulse. The total electromagnetic (EM) field on the edge of the source is represented in the frequency domain in terms of cavity eigenmodes. However, any pulse can be used regardless of its mathematical function, which is the key point of this work. The only requirement is the existence of the original pulse. This EM field is converted to geometric-optical ray representation through the Wigner transform at any desired resolution. Wigner’s representation allows us to describe the dynamics of field evolution in future propagation, which allows us to determine an initial design of the TL. Representation of the EM field by rays gives access to the ray tracing method and future processing, operating in the linear and non-linear regimes. This allows for fast work with graphics cards and parallel processing, providing great flexibility and serving as future preparation that enables us to apply advanced libraries such as machine learning. The platform is used to study the phase-amplitude and spectral characteristics of multimode radiation generation in a free-electron laser (FEL) operating in various operational parameters.
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DOI：
10.1364/josab.399048
发表时间：
2020-09-01
影响因子：
1.9
作者：
Guo, Sijia;Hu, Caixing;Zhang, Haifeng
通讯作者：
Zhang, Haifeng
DOI：
10.1103/physrevaccelbeams.19.050704
发表时间：
2016-05-26
影响因子：
1.7
作者：
Lurie, Yu.;Bratman, V. L.;Savilov, A. V.
通讯作者：
Savilov, A. V.
影响因子：
1.9
作者：
Shabtay, G;Mendlovic, D;Zalevsky, Z
通讯作者：
Zalevsky, Z
影响因子：
27.1
作者：
Alonso, Miguel A.
通讯作者：
Alonso, Miguel A.
DOI：
10.3390/s21144804
发表时间：
2021-07-14
期刊：
Sensors (Basel, Switzerland)
影响因子：
--
作者：
Piekarczyk M;Bar O;Bibrzycki Ł;Niedźwiecki M;Rzecki K;Stuglik S;Andersen T;Budnev NM;Alvarez-Castillo DE;Cheminant KA;Góra D;Gupta AC;Hnatyk B;Homola P;Kamiński R;Kasztelan M;Knap M;Kovács P;Łozowski B;Miszczyk J;Mozgova A;Nazari V;Pawlik M;Rosas M;Sushchov O;Smelcerz K;Smolek K;Stasielak J;Wibig T;Woźniak KW;Zamora-Saa J
通讯作者：
Zamora-Saa J