Interferometric time delay correction for Fourier transform spectroscopy in the extreme ultraviolet

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1080/09500340.2016.1165872
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Name affiliation
  1. National Research Council of Canada. Security and Disruptive Technologies
FormatText, Article
Journal titleJournal of Modern Optics
ISSN0950-0340
1362-3044
Pages1–7
SubjectFourier transform spectroscopy; Time delay correction; XUV; High-order harmonics
Abstract
We demonstrate a Fourier transform spectrometer in the extreme ultraviolet (XUV) spectrum using a high-harmonic source, with wavelengths as short as 32 nm. The femtosecond infrared laser source is divided into two separate foci in the same gas jet to create two synchronized XUV sources. An interferometric method to determine the relative delay between the two sources is shown to improve the accuracy of the delay time, with corrections of up to 200 asec required. By correcting the time base before the Fourier transform, the frequency resolution is improved by up to an order of magnitude.
Publication date
PublisherTaylor & Francis Group
LanguageEnglish
Peer reviewedYes
NPARC number23000110
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Record modified2020-03-16
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