Please use this identifier to cite or link to this item: https://idr.l2.nitk.ac.in/jspui/handle/123456789/9988
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dc.contributor.authorPoornesh, P.-
dc.contributor.authorRavi, K.-
dc.contributor.authorUmesh, G.-
dc.contributor.authorHegde, P.K.-
dc.contributor.authorManjunatha, M.G.-
dc.contributor.authorManjunatha, K.B.-
dc.contributor.authorAdhikari, A.V.-
dc.date.accessioned2020-03-31T06:51:55Z-
dc.date.available2020-03-31T06:51:55Z-
dc.date.issued2010-
dc.identifier.citationOptics Communications, 2010, Vol.283, 7, pp.1519-1527en_US
dc.identifier.uri10.1016/j.optcom.2009.12.015-
dc.identifier.urihttp://idr.nitk.ac.in/jspui/handle/123456789/9988-
dc.description.abstractWe have investigated the third-order nonlinear optical parameters of Bischalcones embedded in DMF solution and in solid PMMA matrix, by Z-scan technique using nanosecond laser pulse trains at 532 nm. Z-scan results reveal that the Bischalcones exhibits negative nonlinear refractive index as high as 10-11 esu. The molecular two-photon absorption cross-section ?2? of Bischalcones were of the order 10-46 cm4 s/photon, which is nearly two orders of magnitude larger than that of Rhodamine 6G which is 10-48 - 10-50 cm4 s/photon. We found that, the two-photon absorption (TPA) is the dominating nonlinear process leading to nonlinear absorption in both the cases in solution and as well as in solid medium. Based on TPA process, the Bischalcones exhibit good optical power limiting of nanosecond laser pulses at the input wavelength. The nonlinear optical parameters found to increase on enhancing the strength of the electron donor groups indicating the dependence and importance of electron donor/acceptor units on third-order nonlinear optical susceptibility ?(3). 2009 Elsevier B.V. All rights reserved.en_US
dc.title3,3?-Benzene-1,4-diylbis[1-(substituted)phenylprop-2-en-1-one] derivatives: A new class of materials for third-order nonlinear optical applicationsen_US
dc.typeArticleen_US
Appears in Collections:1. Journal Articles

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