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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/3307

Title: Picosecond Z-scan investigations of optical nonlinearity in CdS nanostructure films
Authors: Kurian, Pushpa Ann
Vijayan, C.
Suchand Sandeep, C.S.
Philip, Reji
Keywords: CdS nanoclusters
Z -Scan
Two photon absorption
strong quantum confinement
Issue Date: Dec-2004
Citation: Photonics-2004: Proceedings of the 7th international conference on optoelectronics, fiber optics and photonics held at Cochin, December, 2004
Abstract: Materials with large optical nonlinearity and fast response are essential requirements for the development of photonics devices such as optical switches and optical limiters. This paper reports on the linear and nonlinear optical properties of CdS nanoclusters in the size regime of strong quantum confinement synthesized by methods of colloidal chemistry. Stable films of optical quality are obtained by drying the colloidal solution. CdS nanoclusters of 3.5 nm were obtained by changing the concentration of the precursors. The nanocluster films thus prepared are found to be very stable. Large optical nonlinearity is observed in the films in the resonant wavelength region. The nonlinearity appears to originate predominantly from two-photon absorption.
Description: Restricted Access.
URI: http://hdl.handle.net/2289/3307
Copyright: 2004 Photonics
Appears in Collections:Research Papers (LAMP)

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