Please use this identifier to cite or link to this item: https://idr.nitk.ac.in/jspui/handle/123456789/11778
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dc.contributor.authorShettigar, S.-
dc.contributor.authorPoornesh, P.-
dc.contributor.authorUmesh, G.-
dc.contributor.authorSarojini, B.K.-
dc.contributor.authorNarayana, B.-
dc.contributor.authorPrakash, Kamath, K.-
dc.date.accessioned2020-03-31T08:35:35Z-
dc.date.available2020-03-31T08:35:35Z-
dc.date.issued2010-
dc.identifier.citationOptics and Laser Technology, 2010, Vol.42, 7, pp.1162-1166en_US
dc.identifier.urihttp://idr.nitk.ac.in/jspui/handle/123456789/11778-
dc.description.abstractAn investigation of third-order nonlinear optical characterization of newly synthesized conjugated benzodioxal derivatives has been done by using nanosecond Z-scan technique at 532 nm. The molecules demonstrate self-defocusing effect with intensity dependent refractive index (n2) of the order of 10-14 cm2/W. The measured molecular TPA cross-section is ranging from 2.47 10-47 cm4 s/photon to 6.00 cm4 s/photon. Their input-output curves indicate that there is a clear optical power limiting behavior with the limiting threshold in the range 125-181 ?J. The main factor to exhibit the observed nonlinearity in these molecules is the presence of charge donor and acceptor groups. The increased conjugation length increases the nonlinear refraction and increased electron density enhances the nonlinear absorption. The molecules exhibit good nonlinear optical properties, comparable to those of regular azoaromatic compounds. Therefore, the molecules investigated here are promising candidates for optical power limiting devices. 2010 Elsevier Ltd. All rights reserved.en_US
dc.titleInvestigation of third-order nonlinear optical properties of conjugated benzodioxal derivativesen_US
dc.typeArticleen_US
Appears in Collections:1. Journal Articles

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