Interband transition enhanced third harmonic generation from nanoplasmonic gold

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dc.contributor.authorHajisalem, Ghazal
dc.contributor.authorHore, Dennis K.
dc.contributor.authorGordon, Reuven
dc.date.accessioned2016-04-22T22:54:41Z
dc.date.available2016-04-22T22:54:41Z
dc.date.copyright2015en_US
dc.date.issued2015-09-15
dc.description.abstractWe measure third harmonic generation (THG) as a function of infrared fundamental wavelength for gold nanoparticles over a gold film. An order of magnitude enhancement in THG is found at ~2.5 eV. We ensure that this enhancement is away from plasmonic resonances, so that it may be attributed directly to the ultrafast third-order susceptibility of gold. Using a simple relation between linear and third-order susceptibilities in conjunction with the linear response of gold, we show that the experimental results agree well with the enhancement from interband transitions. This result is interesting for potential applications leveraging telecom-band sources, such as third harmonic deep-tissue imaging with plasmonic nanoparticle markers.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipThe authors acknowledge funding from the NSERC Discovery Grants program, and thank Sandra Roy and Dr. Paul Covert for their support in using the laser setup.en_US
dc.identifier.citationHajisalem, G., Hore, D.K. & Gordon, R. (2015). Interband transition enhanced third harmonic generation from nanoplasmonic gold. Optical Materials Express, 5(10), 2217-2224.en_US
dc.identifier.urihttp://dx.doi.org/10.1364/OME.5.002217
dc.identifier.urihttp://hdl.handle.net/1828/7177
dc.language.isoenen_US
dc.publisherOptical Materials Expressen_US
dc.subjectPlasmonics
dc.subjectSubwavelength structures
dc.subjectnanostructures
dc.subjectNonlinear optical materials
dc.subject.departmentDepartment of Electrical and Computer Engineering
dc.subject.departmentDepartment of Chemistry
dc.titleInterband transition enhanced third harmonic generation from nanoplasmonic golden_US
dc.typeArticleen_US

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