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https://doi.org/10.1021/jp047787q
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dc.title | Ultrafast and large third-order nonlinear optical properties of CdS nanocrystals in polymeric film | |
dc.contributor.author | He, J. | |
dc.contributor.author | Ji, W. | |
dc.contributor.author | Ma, G.H. | |
dc.contributor.author | Tang, S.H. | |
dc.contributor.author | Kong, E.S.W. | |
dc.contributor.author | Chow, S.Y. | |
dc.contributor.author | Zhang, X.H. | |
dc.contributor.author | Hua, Z.L. | |
dc.contributor.author | Shi, J.L. | |
dc.date.accessioned | 2014-10-16T09:47:45Z | |
dc.date.available | 2014-10-16T09:47:45Z | |
dc.date.issued | 2005-03-17 | |
dc.identifier.citation | He, 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.issn | 15206106 | |
dc.identifier.uri | http://scholarbank.nus.edu.sg/handle/10635/98496 | |
dc.description.abstract | We 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.uri | http://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1021/jp047787q | |
dc.source | Scopus | |
dc.type | Article | |
dc.contributor.department | PHYSICS | |
dc.description.doi | 10.1021/jp047787q | |
dc.description.sourcetitle | Journal of Physical Chemistry B | |
dc.description.volume | 109 | |
dc.description.issue | 10 | |
dc.description.page | 4373-4376 | |
dc.description.coden | JPCBF | |
dc.identifier.isiut | 000227629700013 | |
Appears in Collections: | Staff Publications |
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