| Plasmonic rainbow rings induced by white radial polarization. | |
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MedLine Citation:
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PMID: 22466196 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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This Letter presents a scheme to embed both angular/spectral surface plasmon resonance (SPR) in a unique far-field rainbow feature by tightly focusing (effective NA=1.45) a polychromatic radially polarized beam on an Au (20 nm)/SiO<sub>2</sub> (500 nm)/Au (20 nm) sandwich structure. Without the need for angular or spectral scanning, the virtual spectral probe snapshots a wide operation range (n=1-1.42; λ=400-700 nm) of SPR excitation in a locally nanosized region. Combined with the high-speed spectral analysis, a proof-of-concept scenario was given by monitoring the NaCl liquid concentration change in real time. The proposed scheme will certainly has a promising impact on the development of objective-based SPR sensor and biometric studies due to its rapidity and versatility. |
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Authors:
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Tzu-Hsiang Lan; Yi-Kuan Chung; Jie-En Li; Chung-Hao Tien |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Optics letters Volume: 37 ISSN: 1539-4794 ISO Abbreviation: Opt Lett Publication Date: 2012 Apr |
Date Detail:
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Created Date: 2012-04-02 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7708433 Medline TA: Opt Lett Country: United States |
Other Details:
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Languages: eng Pagination: 1205-7 Citation Subset: IM |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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