Coherent diffractive imaging with table top high harmonic radiation at 13.5 nm

A highly coherent extreme ultraviolet source was obtained by phase-matched high-order harmonic generation in a semi-infinite gas cell filled with helium gas at ~550 Torr. The phase matching condition can be achieved for the generation of a few harmonic orders around 13.5 nm by variation of the gas p...

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Bibliographic Details
Published in:Journal of modern optics 2013-11, Vol.60 (19), p.1612-1618
Main Authors: Ba Dinh, Khuong, Vu Le, Hoang, Hannaford, Peter, Van Dao, Lap
Format: Article
Language:English
Subjects:
Coherence
coherent diffractive imaging
Diffraction
Gases
Harmonic generations
Harmonic radiation
Helium
high order harmonic generation
Imaging
Lasers
Optics
Pressure
Tables (data)
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Summary:A highly coherent extreme ultraviolet source was obtained by phase-matched high-order harmonic generation in a semi-infinite gas cell filled with helium gas at ~550 Torr. The phase matching condition can be achieved for the generation of a few harmonic orders around 13.5 nm by variation of the gas pressure, focus position, and laser intensity. We demonstrate that the source is usable for coherent diffractive imaging and a spatial resolution of ~200 nm with short exposure times can be achieved.
ISSN:0950-0340
1362-3044
DOI:10.1080/09500340.2013.847127