Analysis of the higher-harmonics radiation suppression in tapered free-electron lasers with phase shifters

IF 1.8 4区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

EPL Pub Date : 2023-08-31 DOI:10.1209/0295-5075/acf59d

A. Kalitenko

引用次数: 0

Abstract

The article presents a study of the higher-harmonics radiation suppression in tapered free-electron lasers (FELs) with phase shifters. To increase the power and efficiency of the FEL, tapering is used —a decrease in the parameter K along the laser axis. Undulator tapering is one of the methods for designing multi-terawatt X-ray FELs (XFELs), which are necessary for research in the field of non-linear optics. In the FELs, in addition to the fundamental harmonic there are also higher harmonics of the radiation field. In this article, we propose methods to suppress the higher harmonics of radiation to improve the quality of radiation for the study of the higher-harmonic generation in crystals, etc. Our method can be transferred to other systems as well.

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移相器对锥形自由电子激光器高次谐波辐射抑制的分析

本文研究了带移相器的锥形自由电子激光器的高次辐射抑制。为了提高自由电子激光器的功率和效率，采用了沿激光轴减小参量K的方法。波动变细是设计多太瓦x射线光场(XFELs)的方法之一，是非线性光学研究的必要手段。在电磁场中，除了基次谐波外，还有辐射场的高次谐波。本文提出了抑制辐射高次谐波以提高辐射质量的方法，用于研究晶体中高次谐波的产生等。我们的方法也可以移植到其他系统。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

EPL 物理-物理：综合

CiteScore

3.30

自引率

5.60%

发文量

332

审稿时长

1.9 months

期刊介绍： General physics – physics of elementary particles and fields – nuclear physics – atomic, molecular and optical physics – classical areas of phenomenology – physics of gases, plasmas and electrical discharges – condensed matter – cross-disciplinary physics and related areas of science and technology. Letters submitted to EPL should contain new results, ideas, concepts, experimental methods, theoretical treatments, including those with application potential and be of broad interest and importance to one or several sections of the physics community. The presentation should satisfy the specialist, yet remain understandable to the researchers in other fields through a suitable, clearly written introduction and conclusion (if appropriate). EPL also publishes Comments on Letters previously published in the Journal.