Spatially Resolved Fourier Transform Spectroscopy in the Extreme Ultraviolet

Abstract

Coherent extreme ultraviolet (XUV) radiation produced by table-top high-harmonic generation (HHG) sources provides a wealth of possibilities in research areas ranging from attosecond physics to high resolution coherent imaging. However, it remains challenging to fully exploit the coherence of such sources for interferometry and Fourier transform spectroscopy (FTS). This is due to the need for a measurement system that is stable at the level of a wavelength fraction, yet allowing a controlled scanning of time delays. Here we demonstrate XUV interferometry and FTS in the 17-55 nm wavelength range using an ultrastable common-path interferometer suitable for high-intensity laser pulses that drive the HHG process. This approach enables the generation of fully coherent XUV pulse pairs with sub-attosecond timing variation, tunable time delay and a clean Gaussian spatial mode profile. We demonstrate the capabilities of our XUV interferometer by performing spatially resolved FTS on a thin film composed of titanium and silicon nitride.

arXiv comment10 pages, 5 figures

References in corpus (3)

• Extreme ultraviolet frequency comb metrology
• Generation of Bright Isolated Attosecond Soft X-Ray Pulses Driven by Multi-Cycle Mid-Infrared Lasers
• Ultra-broadband extreme-ultraviolet lensless imaging of extended complex structures

Cited by in corpus (11)

• Probing electronic wavefunctions by all-optical attosecond interferometry
• Spectrally resolved single-shot wavefront sensing of broadband high-harmonic sources
• Diffractive shear interferometry for extreme ultraviolet high-resolution lensless imaging
• Ultraviolet Dual Comb Spectroscopy: A Roadmap
• A self referencing attosecond interferometer with zeptosecond precision
• Broadband holography-assisted coherent imaging -- towards attosecond imaging at the nanoscale
• Agile spectral tuning of high order harmonics by inteference of two driving pulses
• Phase cycling of extreme ultraviolet pulse sequences generated in rare gases
• Table-top interferometry on extreme time and wavelength scales
• Improved stabilization scheme for extreme ultraviolet quantum interference experiments
• Broadband ptychography using curved wavefront illumination