Spectral interferometry with fiber array for single-shot spatiotemporal characterization of ultrashort lasers

Spectral interferometry with fiber array for single-shot spatiotemporal characterization of ultrashort lasers | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article Spectral interferometry with fiber array for single-shot spatiotemporal characterization of ultrashort lasers Jun Liu, Yilin Xu, Xiong Shen, Renjing Chen, Wenhai Liang, Peng Wang, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-5170235/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 14 Mar, 2026 Read the published version in Communications Physics → Version 1 posted You are reading this latest preprint version Abstract In the realm of ultra-intense laser physics, the precise characterization of laser pulses is indispensable. An innovativemethod named spectral interferometry with fiber array for single-shot spatiotemporal characterization (SIFAST) is designed to overcome the challenges in measuring the spatiotemporal coupling parameters of petawatt laser pulses. SIFAST employs a specially designed single-mode fiber array to simultaneously collect interferometric spectra from multiple spatial points, thereby eliminating the need for spatial scanning. This method enables the reconstruction of a complete three-dimensional spatiotemporal structure of the laser pulse, marking a significant advancement in the field of laser pulse characterization. Physical sciences/Optics and photonics/Optical physics/Ultrafast photonics Physical sciences/Physics/Optical physics/Ultrafast photonics Physical sciences/Optics and photonics/Lasers, LEDs and light sources/Ultrafast lasers Physical sciences/Physics/Electronics, photonics and device physics/Photonic devices Full Text Additional Declarations There is NO Competing Interest. Supplementary Files SupplementaryinformationforSpectralinterferometrywithfiberarrayforsingleshotspatiotemporalcharacterizationofultrashortlasers.docx Cite Share Download PDF Status: Published Journal Publication published 14 Mar, 2026 Read the published version in Communications Physics → Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-5170235","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":369237519,"identity":"ca251ad8-50d6-4e45-89bc-971b80237222","order_by":0,"name":"Jun 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