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dc.contributor.authorEdrei, Eitan
dc.contributor.authorGather, Malte C.
dc.contributor.authorScarcelli, Giuliano
dc.identifier.citationEdrei , E , Gather , M C & Scarcelli , G 2017 , ' Integration of spectral coronagraphy within VIPA-based spectrometers for high extinction Brillouin imaging ' , Optics Express , vol. 25 , no. 6 , 286050 , pp. 6895-6903 .
dc.identifier.otherPURE: 249387071
dc.identifier.otherPURE UUID: a51651d2-2b29-4cc7-8940-86fa8e924b30
dc.identifier.otherScopus: 85015857830
dc.identifier.otherORCID: /0000-0002-4857-5562/work/47136500
dc.identifier.otherWOS: 000397316200087
dc.descriptionThis work was supported in part by the National Institutes of Health (K25EB015885, R33CA204582, U01CA202177); National Science Foundation (CMMI-1537027) and Human Frontier Science Program (Young Investigator Grant RGY0074).en
dc.description.abstractVIPA (virtually imaged phase array) spectrometers have enabled rapid Brillouin spectrum measurements and current designs of multi-stage VIPA spectrometers offer enough spectral extinction to probe transparent tissue, cells and biomaterials. However, in highly scattering media or in the presence of strong back-reflections, such as at interfaces between materials of different refractive indices, VIPA-based Brillouin spectral measurements are limited. While several approaches to address this issue have recently been pursued, important challenges remain. Here we have adapted the design of coronagraphs used for exosolar planet imaging to the spectral domain and integrated it in a double-stage VIPA spectrometer. We demonstrate that this yields an increase in extinction up to 20 dB, with nearly no added insertion loss. The power of this improvement is vividly demonstrated by Brillouin imaging close to reflecting interfaces without index matching or sample tilting.
dc.relation.ispartofOptics Expressen
dc.rights© 2017, Optical Society of America. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at /
dc.subjectQC Physicsen
dc.subjectQH301 Biologyen
dc.titleIntegration of spectral coronagraphy within VIPA-based spectrometers for high extinction Brillouin imagingen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews. Biomedical Sciences Research Complexen
dc.description.statusPeer revieweden

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