Nonlinear optical characteristics of self-assembled films of ZnO

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Nonlinear optical characteristics of self-assembled films of ZnO

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dc.contributor.author Litty, Irimpan
dc.contributor.author Deepthy, A
dc.contributor.author Bindu, Krishnan
dc.contributor.author V P N Nampoori
dc.contributor.author Radhakrishnan, P
dc.date.accessioned 2010-12-17T06:22:45Z
dc.date.available 2010-12-17T06:22:45Z
dc.date.issued 2008
dc.identifier.other Appl. Phys. B 90, 547–556 (2008)
dc.identifier.uri http://dyuthi.cusat.ac.in/xmlui/purl/2046
dc.description.abstract In the present work, we have investigated the nonlinear optical properties of self-assembled films formed from ZnO colloidal spheres by z-scan technique. The sign of the nonlinear component of refractive index of the material remains the same; however, a switching from reverse saturable absorption to saturable absorption has been observed as the material changes from colloid to self-assembled film. These different nonlinear characteristics can be mainly attributed to ZnO defect states and electronic effects when the colloidal solution is transformed into self-assembled monolayers. We investigated the intensity, wavelength and size dependence of saturable and reverse saturable absorption of ZnO self-assembled films and colloids. Values of the imaginary part of third-order susceptibility are calculated for particles of size in the range 20–300 nm at different intensity levels ranging from 40 to 325MW/cm2 within the wavelength range of 450–650 nm. en_US
dc.description.sponsorship Cochin University of Science and Technology,Amrita Institute of Medical Sciences & Centre for Materials for Electronics Technology. en_US
dc.language.iso en en_US
dc.publisher Springer en_US
dc.subject Nonlinear optical properties en_US
dc.subject Self-assembled films en_US
dc.subject Photonics en_US
dc.subject ZnO en_US
dc.title Nonlinear optical characteristics of self-assembled films of ZnO en_US
dc.type Working Paper en_US
dc.contributor.faculty Technology en_US
dc.identifier.url DOI: 10.1007/s00340-007-2886-1 en_US


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