Please use this identifier to cite or link to this item: https://idr.nitk.ac.in/jspui/handle/123456789/13668
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dc.contributor.authorXia, Y.-
dc.contributor.authorJiang, Y.-
dc.contributor.authorFan, R.-
dc.contributor.authorDong, Z.-
dc.contributor.authorZhao, W.-
dc.contributor.authorChen, D.-
dc.contributor.authorUmesh, G.-
dc.date.accessioned2020-03-31T08:48:18Z-
dc.date.available2020-03-31T08:48:18Z-
dc.date.issued2009-
dc.identifier.citationOptics and Laser Technology, 2009, Vol.41, 6, pp.700-704en_US
dc.identifier.uri10.1016/j.optlastec.2009.01.011-
dc.identifier.urihttp://idr.nitk.ac.in/jspui/handle/123456789/13668-
dc.description.abstractThe two-photon absorption (TPA) characteristics of PMMA discs doped with three different dyes were studied using an fs-pulsed Ti-Sapphire laser as the pump source, and employing the open-aperture Z-scan technique. TPA cross-sections obtained for PMMA doped with the dyes PM597, DCM and rhodamine 6G-rhodamine B (co-doped) were found to be equal to 24.7, 33.3 and 32.3 GM, respectively (1 GM=10-50 cm4 s phot-1 mol-1). Furthermore, two-photon fluorescence was measured for the samples containing DCM and rhodamine 6G-rhodamine B (co-doped). Compared to the one-photon fluorescence spectrum, the peaks in the two-photon fluorescence spectrum were red shifted and the extent of red shift increased with increasing doping concentration. We have also observed that the red shift in the two-photon fluorescence peak of the samples in the solid form is much larger than that in the solution state. This phenomenon could be explained by a twisted intra-molecular charge transfer model. � 2009 Elsevier Ltd. All rights reserved.en_US
dc.titleUltrafast nonlinear optical properties of dye-doped PMMA discs irradiated by 40 fs laser pulsesen_US
dc.typeArticleen_US
Appears in Collections:1. Journal Articles

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