Please use this identifier to cite or link to this item:
|Title:||Ultrafast and large third-order nonlinear optical properties of CdS nanocrystals in polymeric film||Authors:||He, J.
|Issue Date:||17-Mar-2005||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||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.||Source Title:||Journal of Physical Chemistry B||URI:||http://scholarbank.nus.edu.sg/handle/10635/98496||ISSN:||15206106||DOI:||10.1021/jp047787q|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Sep 17, 2019
WEB OF SCIENCETM
checked on Sep 10, 2019
checked on Sep 7, 2019
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.