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dc.contributor.authorGoodman, Aaron Jacob
dc.contributor.authorTisdale, William A.
dc.date.accessioned2015-05-07T15:27:56Z
dc.date.available2015-05-07T15:27:56Z
dc.date.issued2015-05
dc.date.submitted2014-12
dc.identifier.issn0031-9007
dc.identifier.issn1079-7114
dc.identifier.urihttp://hdl.handle.net/1721.1/96930
dc.description.abstractSecond-order nonlinear optical interactions such as sum- and difference-frequency generation are widely used for bioimaging and as selective probes of interfacial environments. However, inefficient nonlinear optical conversion often leads to poor signal-to-noise ratio and long signal acquisition times. Here, we demonstrate the dramatic enhancement of weak second-order nonlinear optical signals via stimulated sum- and difference-frequency generation. We present a conceptual framework to quantitatively describe the interaction and show that the process is highly sensitive to the relative optical phase of the stimulating field. To emphasize the utility of the technique, we demonstrate stimulated enhancement of second harmonic generation (SHG) from bovine collagen-I fibrils. Using a stimulating pulse fluence of only 3  nJ/cm[superscript 2], we obtain an SHG enhancement > 10[superscript 4] relative to the spontaneous signal. The stimulation enhancement is greatest in situations where spontaneous signals are the weakest—such as low laser power, small sample volume, and weak nonlinear susceptibility—emphasizing the potential for this technique to improve signal-to-noise ratios in biological imaging and interfacial spectroscopy.en_US
dc.description.sponsorshipUnited States. Dept. of Energy. Office of Basic Energy Sciences (Award DE-SC0010538)en_US
dc.description.sponsorshipNational Science Foundation (U.S.) (Grant 1122374)en_US
dc.publisherAmerican Physical Societyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1103/PhysRevLett.114.183902en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceAmerican Physical Societyen_US
dc.titleEnhancement of Second-Order Nonlinear-Optical Signals by Optical Stimulationen_US
dc.typeArticleen_US
dc.identifier.citationGoodman, A. J., and W. A. Tisdale. "Enhancement of Second-Order Nonlinear-Optical Signals by Optical Stimulation." Phys. Rev. Lett. 114, 183902 (May 2015). © 2015 American Physical Societyen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Chemical Engineeringen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Chemistryen_US
dc.contributor.mitauthorGoodman, Aaron Jacoben_US
dc.contributor.mitauthorTisdale, William A.en_US
dc.relation.journalPhysical Review Lettersen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dc.date.updated2015-05-06T22:00:02Z
dc.language.rfc3066en
dc.rights.holderAmerican Physical Society
dspace.orderedauthorsGoodman, A. J.; Tisdale, W. A.en_US
dc.identifier.orcidhttps://orcid.org/0000-0002-6615-5342
dc.identifier.orcidhttps://orcid.org/0000-0002-0159-5646
mit.licensePUBLISHER_POLICYen_US
mit.metadata.statusComplete


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