dc.contributor.authorWang, Rong (EEE)
dc.contributor.authorDu, Luping
dc.contributor.authorZhang, Chonglei
dc.contributor.authorMan, Zhongsheng
dc.contributor.authorWang, Yijia
dc.contributor.authorWei, Shibiao
dc.contributor.authorMin, Changjun
dc.contributor.authorZhu, Siwei
dc.contributor.authorYuan, Xiaocong
dc.identifier.citationWang, R., Du, L., Zhang, C., Man, Z., Wang, Y., Wei, S., and et al. (2013). Plasmonic petal-shaped beam for microscopic phase-sensitive SPR biosensor with ultrahigh sensitivity. Optics Letters, 38(22), 4770-4773.en_US
dc.description.abstractDifferential phase measurement between radially polarized (RP) and azimuthally polarized (AP) beams is an important technique in microscopic surface plasmon resonance (SPR) biosensors as reported in our earlier works [Opt. Lett. 37, 2091 (2012); Appl. Phys. Lett. 102, 011114 (2013)]. However, such a technique suffers complex beam splitting, detection, and data processing procedures for RP and AP beams which may lower the accuracy of phase measurement. In this Letter, a novel plasmonic petal-shaped vector beam is proposed instead of RP and AP beams, greatly simplifying the sensor system and enabling single measurement in differential interferometry. Moreover, an improved ultrahigh sensitivity on the order of 10−7 refractive index units (RIUs) is experimentally verified in the proposed system.en_US
dc.relation.ispartofseriesOptics lettersen_US
dc.rights© 2013 Optical Society of America. This paper was published in Optics Letters and is made available as an electronic reprint (preprint) with permission of Optical Society of America. The paper can be found at the following official DOI: [http://dx.doi.org/10.1364/OL.38.004770]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.en_US
dc.subjectDRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics
dc.titlePlasmonic petal-shaped beam for microscopic phase-sensitive SPR biosensor with ultrahigh sensitivityen_US
dc.typeJournal Article
dc.contributor.schoolSchool of Electrical and Electronic Engineeringen_US
dc.description.versionPublished versionen_US

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