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Use of tunable second-harmonic signal from KNbO3 nanoneedles to find optimal wavelength for deep-tissue imaging
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2014 (English)In: Laser & Photonics reviews, ISSN 1863-8880, E-ISSN 1863-8899, Vol. 8, no 6, p. 865-874Article in journal (Refereed) Published
Abstract [en]

Nonlinear optical (NLO) responses of perovskite-type nanostructures have a variety of potential applications owing to the highly efficient frequency conversion guaranteed by both the material itself and the nanometer-scale configuration. KNbO3 (KN) nanoneedles have been identified as a promising NLO material because of the superior broadband frequency conversion efficiency, and if incident light is propagating in a direction perpendicular to the axis of a nanoneedle, then the phase-matching constraint can be relaxed. Here, the second-harmonic generation (SHG) and third-harmonic generation (THG) responses of both individual and clustered KN nanoneedles are reported. Based on these results, a novel method is proposed for determining the optimal excitation wavelength for NLO imaging of several biological samples, with KN nanoneedles acting as NLO agents. The method is shown to provide the optical features in the focal plane and a more reliable estimation of the optimal excitation wavelength for deep-tissue imaging.

Place, publisher, year, edition, pages
2014. Vol. 8, no 6, p. 865-874
Keywords [en]
deep-tissue imaging, nonlinear optics, KNbO3 nano-needles, SHG, THG
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Identifiers
URN: urn:nbn:se:kth:diva-157611DOI: 10.1002/lpor.201400009ISI: 000344649100005Scopus ID: 2-s2.0-84923762979OAI: oai:DiVA.org:kth-157611DiVA, id: diva2:771150
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QC 20151005

Available from: 2014-12-12 Created: 2014-12-11 Last updated: 2017-12-05Bibliographically approved

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He, Sailing
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Electromagnetic EngineeringZhejiang-KTH Joint Research Center of Photonics, JORCEP
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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
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