Nonlinear optical studies of a newly synthesized copolymer containing oxadiazole and substituted thiophenes

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dc.contributor.authorJohn Kiran, A.
dc.contributor.authorUdayakumar, D.
dc.contributor.authorChandrasekharan, K.
dc.contributor.authorAhdikari, A.V.
dc.contributor.authorShashikala, H.D.
dc.contributor.authorPhilip, R.
dc.date.accessioned2026-02-05T09:37:06Z
dc.date.issued2007
dc.description.abstractWe 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, n<inf>2</inf>, 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.
dc.identifier.citationOptics Communications, 2007, 271, 1, pp. 236-240
dc.identifier.issn304018
dc.identifier.urihttps://doi.org/10.1016/j.optcom.2006.10.003
dc.identifier.urihttps://idr.nitk.ac.in/handle/123456789/27821
dc.subjectCopolymers
dc.subjectFour wave mixing
dc.subjectLight absorption
dc.subjectNeodymium lasers
dc.subjectRefractive index
dc.subjectSulfur compounds
dc.subjectOptical limiting
dc.subjectPolythiophenes
dc.subjectZ-scan
dc.subjectNonlinear optics
dc.titleNonlinear optical studies of a newly synthesized copolymer containing oxadiazole and substituted thiophenes

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