Nonlinear optical and optical power limiting studies on a new thiophene-based conjugated polymer in solution and solid PMMA matrix

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dc.contributor.authorPoornesh, P.
dc.contributor.authorHegde, P.K.
dc.contributor.authorUmesh, G.
dc.contributor.authorManjunatha, M.G.
dc.contributor.authorManjunatha, K.B.
dc.contributor.authorVasudeva Adhikari, A.V.
dc.date.accessioned2026-02-05T09:36:27Z
dc.date.issued2010
dc.description.abstractAn experimental investigation of the third-order nonlinear optical properties of new poly{2-{5-[3,4-ditetradecyloxy-5-(1,3,4-oxadiazol-2-yl)thiophen-2-yl]-1,3,4-oxadiazol-2-yl}pyridine} (P) in tetrahydrofuran (THF) solution and in solid poly(methylmethacrylate) (PMMA) matrix, by Z-scan technique is reported. The Z-scan traces reveal that the composite films exhibit large negative nonlinear refractive index of the order 10-10 esu. The excited-state absorption cross-section was found to be larger than the ground-state absorption indicating that the operating nonlinear process is reverse saturable absorption (RSA). The new polymer P exhibits good optical power limiting properties in the nanosecond regime in solution and as well in solid PMMA matrix. © 2009 Elsevier Ltd. All rights reserved.
dc.identifier.citationOptics and Laser Technology, 2010, 42, 1, pp. 230-236
dc.identifier.issn303992
dc.identifier.urihttps://doi.org/10.1016/j.optlastec.2009.06.018
dc.identifier.urihttps://idr.nitk.ac.in/handle/123456789/27508
dc.subjectBased conjugated polymers
dc.subjectExcited state absorption
dc.subjectExperimental investigations
dc.subjectGround state absorption
dc.subjectmatrix
dc.subjectNon-linear optical
dc.subjectNonlinear process
dc.subjectNonlinear refractive index
dc.subjectOptical power limiting
dc.subjectPMMA matrices
dc.subjectPoly(methyl methacrylate)
dc.subjectReverse saturable absorption
dc.subjectReverse saturable absorption (RSA)
dc.subjectTetrahydrofurans
dc.subjectThird order nonlinear optical properties
dc.subjectZ-scan
dc.subjectZ-scan technique
dc.subjectZ-scan traces
dc.subjectAbsorption
dc.subjectComposite films
dc.subjectLight transmission
dc.subjectOptical materials
dc.subjectOrganic polymers
dc.subjectRefractive index
dc.subjectSolid solutions
dc.subjectThiophene
dc.subjectNonlinear optics
dc.titleNonlinear optical and optical power limiting studies on a new thiophene-based conjugated polymer in solution and solid PMMA matrix

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