Single-shot spatial-coherence measurement of 13 nm high-order harmonic beam by a Young's double-slit measurement

Yutaka Nagata, Kentaro Furusawa, Yasuo Nabekawa, Katsumi Midorikawa

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

The interference pattern produced by a single 13 nm high-order harmonic pulse is captured by an extreme-ultraviolet CCD camera. A beam divergence of 0.35 mrad and a high fringe visibility of 0.96 are obtained with an optimal phase-matching condition for the 13 nm harmonics. The spatial coherence length of the 13 nm harmonics selected by Mo/Si multilayer mirrors is larger than the beam diameter. This result shows that the 13 nm harmonic beam is useful for applications in interferometry, time-resolved studies of ultrafast dynamics.

Original languageEnglish
Pages (from-to)722-724
Number of pages3
JournalOptics Letters
Volume32
Issue number6
DOIs
Publication statusPublished - 2007 Mar 15

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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