Single-shot holography using high-order harmonics

• Published in: Journal of modern optics Vol. 55; no. 16; pp. 2723 - 2730
• Main Authors: Schwenke, J., Mai, A., Miranda, M., He, X., Genoud, G., Mikkelsen, A., Pettersson, S.-G., Persson, A., L'Huillier, A.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: London Taylor & Francis Group 20-09-2008; Taylor & Francis
• Subjects: Atom and Molecular Physics and Optics; Atom- och molekylfysik och optik; Exact sciences and technology; Fundamental areas of phenomenology (including applications); Fysik; high-harmonic generation; Holography; Image reconstruction; tomography; Imaging and optical processing; Instruments, apparatus, components and techniques common to several branches of physics and astronomy; Natural Sciences; Naturvetenskap; Optics; Physical Sciences; Physics; time-resolved imaging; X- and γ-ray instruments and techniques; Time resolution; Algorithms; Ultrashort pulse; XUV radiation; X ray holography; Holography; Signal-to-noise ratio; Optical harmonic generation; Optical frequency conversion; Nonlinear optics; Higher harmonic; Image reconstruction
• ISSN: 0950-0340; 1362-3044
• DOI: 10.1080/09500340802398236

This work demonstrates single-shot holography with ultrashort XUV pulses. The pulses are generated by high-harmonic generation in an Ar gas cell and focused to produce a strongly divergent reference beam suitable for in-line holography of micrometer size objects. The achieved intensity of the high-order harmonics in the XUV regime is sufficient for single-shot holography with good signal-to-noise ratio. A numerical algorithm is applied to reconstruct real images from the recorded holograms, which also includes an iterative process to reduce the twin-image blurring. Holograms and reconstructed images of microscope tips are presented and a description of the algorithm is given.