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http://hdl.handle.net/2289/4548
Title: | Photophysical and nonlinear optical properties of zincphthalocyanines with peripheral substitutions |
Authors: | Manaa, H. Tuhl, A. Samuel, J. AL-Mulla, A. AL-Awadi, N.A. Makhseed, S. |
Issue Date: | Jan-2011 |
Publisher: | Elsevier |
Citation: | Optics Communications, 2011, Vol.284, p450 |
Abstract: | Photophysical and nonlinear optical properties of zinc phthalocyanines (ZnPc) bearing peripheral phenoxy substituents containing different functionalized groups were studied. Fluorescence spectra corresponding to the optical transition S1 → S0 are found to be appeared at 684 or 686.4 nm. Z-scan technique reveals large nonlinearities, where the absorptive and refractive effects are separately evaluated. Saturation absorption of ZnPc-1 was observed at 632.8 nm, with a very large nonlinear absorption coefficient β = -1.36 × 10-2 cm/W. However a strong nonlinear refractive effect was found in all ZnPcs (1-4). Transmitted versus incident irradiance measurements carried out on ZnPc-1 and ZnPc-2, showed a very clear optical limiting behavior with irradiance thresholds around be 44 W/cm2 and 90 W/cm2 respectively. |
Description: | Restricted Access. An open-access version is available at arXiv.org (one of the alternative locations) |
URI: | http://hdl.handle.net/2289/4548 |
ISSN: | 0030-4018 |
Alternative Location: | http://dx.doi.org/ 10.1016/j.optcom.2010.09.018 http://adsabs.harvard.edu/abs/2011OptCo.284..450M |
Copyright: | 2011, Elsevier |
Appears in Collections: | Research Papers (TP) |
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2011_OptCommu_Vol.28_p450.pdf Restricted Access | Restricted Access | 756.74 kB | Adobe PDF | View/Open Request a copy |
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