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Title: | Nonlinear optical studies of a newly synthesized copolymer containing oxadiazole and substituted thiophenes |
Authors: | John, Kiran, A. Udayakumar, D. Chandrasekharan, K. Ahdikari, A.V. Shashikala, H.D. Philip, R. |
Issue Date: | 2007 |
Citation: | Optics Communications, 2007, Vol.271, 1, pp.236-240 |
Abstract: | We investigated the third-order nonlinear optical properties of a newly synthesized soluble copolymer containing oxadiazole and thiophene units using Z-scan and Degenerate Four Wave Mixing (DFWM) techniques. The measurements were performed at 532 nm with 7 ns pulses from a Nd:YAG laser. We found a good agreement between the values of ?(3) determined from both experiments. Z-scan results indicate a negative nonlinear refractive index, n2, whose magnitude is of the order of 10-10 esu. The copolymer exhibits strong nonlinear absorption and good optical limiting properties at 532 nm, and hence may be a potential material for optical limiting applications. 2006 Elsevier B.V. All rights reserved. |
URI: | http://idr.nitk.ac.in/jspui/handle/123456789/12265 |
Appears in Collections: | 1. Journal Articles |
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