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dc.contributor.authorBain, F. M.
dc.contributor.authorSilva, W. F.
dc.contributor.authorLagatsky, A. A.
dc.contributor.authorThomson, R. R.
dc.contributor.authorPsaila, N. D.
dc.contributor.authorKar, A. K.
dc.contributor.authorSibbett, W.
dc.contributor.authorJaque, D.
dc.contributor.authorBrown, C. T. A.
dc.identifier.citationBain , F M , Silva , W F , Lagatsky , A A , Thomson , R R , Psaila , N D , Kar , A K , Sibbett , W , Jaque , D & Brown , C T A 2011 , ' Microspectroscopy of ultrafast laser inscribed channel waveguides in Yb:tungstate crystals ' , Applied Physics Letters , vol. 98 , no. 14 , 141108 .
dc.identifier.otherPURE: 17584222
dc.identifier.otherPURE UUID: d06a7e7c-8c8b-435d-9228-b31ef6c67c13
dc.identifier.otherWOS: 000289297800008
dc.identifier.otherScopus: 79954481055
dc.identifier.otherORCID: /0000-0002-4405-6677/work/86537172
dc.description.abstractWe report microspectroscopy measurements of crystalline channel waveguides fabricated in Yb:KGd(WO4)(2) and Yb:KY(WO4)(2) using the ultrafast laser inscription technique. From these measurements we find that densification of the WO2W bridge in the double tungstate crystal lattice is responsible for the refractive index increase, which creates the waveguide confinement. We identified that shifts toward lower energies in the ~760 cm(-1) Raman mode indicate regions, which guide light polarized along the crystallographic b axis, while higher energy shifts in the 682 and 898 cm(-1) Raman lines correspond to guiding regions for light polarized along the crystallographic a axis.
dc.relation.ispartofApplied Physics Lettersen
dc.rightsCopyright 2011, American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Applied Physics Letters, Vol 98, Issue 14, and may be found at:
dc.subjectCrystal structureen
dc.subjectRefractive indexen
dc.subjectChannel waveguidesen
dc.subjectPhotonic crystal waveguidesen
dc.titleMicrospectroscopy of ultrafast laser inscribed channel waveguides in Yb:tungstate crystalsen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.description.statusPeer revieweden

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