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Quasi-phase-matched generation of coherent extreme-ultraviolet light

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dc.contributor.authorBackus, S., author
dc.contributor.authorKapteyn, H. C., author
dc.contributor.authorMurnane, M. M., author
dc.contributor.authorChristov, I. P., author
dc.contributor.authorWeiman, S., author
dc.contributor.authorGreen, H., author
dc.contributor.authorTobey, R., author
dc.contributor.authorBartels, R. A., author
dc.contributor.authorPaul, A., author
dc.contributor.authorNature Publishing Group, publisher
dc.date.accessioned2007-01-03T08:10:40Z
dc.date.available2007-01-03T08:10:40Z
dc.date.issued2003
dc.description.abstractHigh-harmonic generation is a well-known method of producing coherent extreme-ultraviolet (EUV) light, with photon energies up to about 0.5 keV. This is achieved by focusing a femtosecond laser into a gas, and high harmonics of the fundamental laser frequency are radiated in the forward direction. However, although this process can generate high-energy photons, efficient high-harmonic generation has been demonstrated only for photon energies of the order 50-100 eV. Ionization of the gas prevents the laser and the EUV light from propagating at the same speed, which severely limits the conversion efficiency. Here we report a technique to overcome this problem, and demonstrate quasi-phase-matched frequency conversion of laser light into EUV. Using a modulated hollow-core waveguide to periodically vary the intensity of the laser light driving the conversion, we efficiently generate EUV light even in the presence of substantial ionization. The use of a modulated fibre shifts the energy spectrum of the high-harmonic light to significantly higher photon energies than would otherwise be possible. We expect that this technique could form the basis of coherent EUV sources for advanced lithography and high-resolution imaging applications. In future work, it might also be possible to generate isolated attosecond pulses.
dc.format.mediumborn digital
dc.format.mediumarticles
dc.identifier.bibliographicCitationPaul, A., et al., Quasi-Phase-Matched Generation of Coherent Extreme-Ultraviolet Light, Nature 421, no. 6918 (2 January 2003): 51-54.
dc.identifier.urihttp://hdl.handle.net/10217/67980
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado State University. Libraries
dc.relation.ispartofFaculty Publications
dc.rights©2003 Nature Publishing Group.
dc.rightsCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.
dc.titleQuasi-phase-matched generation of coherent extreme-ultraviolet light
dc.typeText

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