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|Title:||Resonant optical nonlinearity of fullerenes in free-standing polymethyl methacrylate films||Authors:||Ji, W.
|Issue Date:||1-Jan-1993||Citation:||Ji, W., Tang, S.H., Xu, G.Q., Chan, H.S.O., Ng, S.C., Ng, W.W. (1993-01-01). Resonant optical nonlinearity of fullerenes in free-standing polymethyl methacrylate films. Journal of Applied Physics 74 (6) : 3669-3672. ScholarBank@NUS Repository. https://doi.org/10.1063/1.354508||Abstract:||An experimental investigation was reported involving both the preparation of films of polymethyl methacrylate (PMMA) doped with fullerenes and the observation of resonant χ(3) at a wavelength of 608 nm. By conducting the degenerate four-wave mixing experiment and measuring irradiance-dependent transmission, the third-order nonlinear susceptibility of the films were determined to be of the order of 10-10 esu, and it was governed by its imaginary part. The observed nonlinear susceptibility was found to be primarily caused by excited-state absorption by comparing with the tight-binding theory and excited-state absorption model.||Source Title:||Journal of Applied Physics||URI:||http://scholarbank.nus.edu.sg/handle/10635/94718||ISSN:||00218979||DOI:||10.1063/1.354508|
|Appears in Collections:||Staff Publications|
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