Please use this identifier to cite or link to this item: https://doi.org/10.1021/jp047787q
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dc.titleUltrafast and large third-order nonlinear optical properties of CdS nanocrystals in polymeric film
dc.contributor.authorHe, J.
dc.contributor.authorJi, W.
dc.contributor.authorMa, G.H.
dc.contributor.authorTang, S.H.
dc.contributor.authorKong, E.S.W.
dc.contributor.authorChow, S.Y.
dc.contributor.authorZhang, X.H.
dc.contributor.authorHua, Z.L.
dc.contributor.authorShi, J.L.
dc.date.accessioned2014-10-16T09:47:45Z
dc.date.available2014-10-16T09:47:45Z
dc.date.issued2005-03-17
dc.identifier.citationHe, J., Ji, W., Ma, G.H., Tang, S.H., Kong, E.S.W., Chow, S.Y., Zhang, X.H., Hua, Z.L., Shi, J.L. (2005-03-17). Ultrafast and large third-order nonlinear optical properties of CdS nanocrystals in polymeric film. Journal of Physical Chemistry B 109 (10) : 4373-4376. ScholarBank@NUS Repository. https://doi.org/10.1021/jp047787q
dc.identifier.issn15206106
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/98496
dc.description.abstractWe report the ultrafast and large third-order nonlinear optical properties of CdS nanocrystals (NCs) embedded in a polymeric film. The CdS NCs of 2 nm radius are synthesized by an ion-exchange method and highly concentrated in the two layers near the surfaces of the polymeric film. The two-photon absorption coefficient and the optical Kerr coefficient are measured with laser pulses of 250 fs duration at 800 nm wavelength. The one-photon and two-photon figures of merit are determined to be 3.1 and 1.3, respectively, at irradiance of 2 GW/cm2. The observed nonlinearities have a recovery time of ∼1 ps. The two-photon-generated free carrier effects have also been observed and discussed. These results demonstrate that CdS NCs embedded in polymeric film are a promising candidate for optical switching applications. © 2005 American Chemical Society.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1021/jp047787q
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentPHYSICS
dc.description.doi10.1021/jp047787q
dc.description.sourcetitleJournal of Physical Chemistry B
dc.description.volume109
dc.description.issue10
dc.description.page4373-4376
dc.description.codenJPCBF
dc.identifier.isiut000227629700013
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