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dc.contributor.authorApurv Chaitanya, N.
dc.contributor.authorChaitanya Kumar, S.
dc.contributor.authorDevi, Kavita
dc.contributor.authorSamanta, G. K.
dc.contributor.authorEbrahim-Zadeh, M.
dc.contributor.otherUniversitat Politècnica de Catalunya. Institut de Ciències Fotòniques
dc.date.accessioned2016-10-13T09:09:53Z
dc.date.available2016-10-13T09:09:53Z
dc.date.issued2016-06-01
dc.identifier.citationApurv Chaitanya, N. [et al.]. Ultrafast optical vortex beam generation in the ultraviolet. "Optics Letters", 1 Juny 2016, vol. 41, núm. 12, p. 2715-2718.
dc.identifier.issn0146-9592
dc.identifier.urihttp://hdl.handle.net/2117/90720
dc.description.abstractWe report on the generation of ultrafast vortex beams in the deep ultraviolet (DUV) wavelength range at 266 nm, for the first time to our knowledge. Using a Yb-fiber-based green source in combination with two spiral phase plates of orders 1 and 2, we were able to generate picosecond Laguerre–Gaussian (LG) beams at 532 nm. Subsequently, these LG beams were frequency doubled by single-pass, second-harmonic generation in a 10 mm-long 𝛽-BaB2O4β-BaB2O4 crystal to generate ultrafast vortex beams at 266 nm with a vortex order as high as 12, providing up to 383 mW of DUV power at a single-pass, green-to-DUV conversion efficiency of 5.2%. The generated picosecond UV vortex beam has a spectral width of 1.02 nm with a passive power stability better than 1.2% rms over >1.5  h>1.5  h.
dc.format.extent4 p.
dc.language.isoeng
dc.publisherOSA
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Física
dc.subject.lcshUltraviolet
dc.subject.othervortex
dc.titleUltrafast optical vortex beam generation in the ultraviolet
dc.typeArticle
dc.subject.lemacÒptica
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttps://www.osapublishing.org/ol/abstract.cfm?uri=ol-41-12-2715
dc.rights.accessOpen Access
dc.description.versionPostprint (author's final draft)
dc.relation.projectidSEV-2015-0522
upcommons.citation.pubplaceUSA
upcommons.citation.publishedtrue
upcommons.citation.publicationNameOptics Letters
upcommons.citation.volume41
upcommons.citation.number12
upcommons.citation.startingPage2715
upcommons.citation.endingPage2718
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