A discrete inversion measurement method for non-uniform electric fields based on electric field induced second harmonic generation

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2025-09-20 DOI:10.1016/j.optlastec.2025.113939

Qinyi Luo , Xiaoyue Chen , Yanze Zhang , Jun Xie , Lei Lan

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引用次数: 0

Abstract

In recent years, with the rapid development of strong electric field applications such as plasma and high-voltage power transmission, electric field measurement methods based on the E-FISH effect characterized by their non-intrusive and distortion-free advantages have attracted increasing attention in the field of high-voltage and strong electric field measurement. This paper proposes a discrete inversion method that decouples electric field segment points from SHG signal measurement points. By eliminating the strong correlation dependency between segment points and measurement points, this method enables the determination of electric field strength at positions near fixed measurement points using a limited number of sensors. Focusing on the electric field of a wire-plate electrode, this study first uses numerical simulations to investigate the influence of truncation error, Rayleigh length, and segment length on the accuracy of electric field inversion. Based on the simulation results, appropriate parameters were selected to experimentally measure the SHG signals generated by the electric fields of both a single wire-plate electrode and a double wire-plate electrode. The experimental results validate the applicability of the proposed method for inverting non-uniform and asymmetrical electric fields.

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基于电场诱导二次谐波产生的非均匀电场离散反演测量方法

近年来，随着等离子体、高压输电等强电场应用的迅速发展，基于E-FISH效应的电场测量方法以其无侵入性、无畸变等优点越来越受到高压、强电场测量领域的关注。本文提出了一种将电场段点与SHG信号测点解耦的离散反演方法。通过消除分段点和测量点之间的强相关性依赖，该方法可以使用有限数量的传感器确定固定测量点附近位置的电场强度。本文首先以线板电极的电场为研究对象，通过数值模拟研究了截断误差、瑞利长度和线段长度对电场反演精度的影响。根据仿真结果，选择合适的参数对单线板电极和双线板电极电场产生的SHG信号进行实验测量。实验结果验证了该方法对非均匀和不对称电场反演的适用性。

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

Optics and Laser Technology 物理-光学

CiteScore

8.50

自引率

10.00%

发文量

1060

审稿时长

3.4 months

期刊介绍： Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems