Publication:
Measurement of the enhanced evanescent fields of integrated waveguides for optical near-field sensing

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cris.virtual.departmentExperimentalphysik und Materialwissenschaften
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cris.virtual.departmentbrowseExperimentalphysik und Materialwissenschaften
cris.virtual.departmentbrowseExperimentalphysik und Materialwissenschaften
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cris.virtualsource.departmente25ab10e-f014-405b-ae9d-5dfa5939c704
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dc.contributor.authorHahn, Julia
dc.contributor.authorRüter, Christian E.
dc.contributor.authorFecher, Frank
dc.contributor.authorPetter, Jürgen
dc.contributor.authorKip, Detlef
dc.contributor.authorTschudi, Theo
dc.date.issued2008-05
dc.description.abstractThe sensitivity of an integrated optical sensing device can be enhanced by coating it with a high refractive index layer, while both incoupled intensity and spatial resolution are maintained. The potential for enhanced sensing is demonstrated using titanium indiffused waveguiding structures in LiNbO(3) coated with a TiO(2) film. To the best of our knowledge, it could be measured for the first time that the outcoupled intensity at the surface was enhanced by a factor of 12-15 while keeping the penetration depth of the evanescent field constant of the order of only a few tens of nanometers. The evanescent fields of the guided modes were measured and characterized with a scanning near-field optical microscope and are in accordance with the numerical simulations.
dc.description.versionNA
dc.identifier.doi10.1364/ao.47.002357
dc.identifier.issn1559-128X
dc.identifier.pmid18449300
dc.identifier.urihttps://openhsu.ub.hsu-hh.de/handle/10.24405/14008
dc.language.isoen
dc.publisherSoc.
dc.relation.journalApplied optics
dc.relation.orgunitTechnische Universität Clausthal
dc.rights.accessRightsmetadata only access
dc.titleMeasurement of the enhanced evanescent fields of integrated waveguides for optical near-field sensing
dc.typeResearch article
dcterms.bibliographicCitation.originalpublisherplaceWashington, DC
dspace.entity.typePublication
hsu.uniBibliographyNein
oaire.citation.endPage2360
oaire.citation.issue13
oaire.citation.startPage2357
oaire.citation.volume47
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