Photoacoustic signal saturation and optical limiting in C70-toluene solution

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Photoacoustic signal saturation and optical limiting in C70-toluene solution

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dc.contributor.author Riju C, Issac
dc.contributor.author Harilal, S S
dc.contributor.author Geetha K, Varier
dc.contributor.author Bindhu, C V
dc.contributor.author Nampoori, V P N
dc.contributor.author Vallabhan, C P G
dc.date.accessioned 2011-11-02T07:04:21Z
dc.date.available 2011-11-02T07:04:21Z
dc.date.issued 1997-02
dc.identifier.other Opt. Eng. 36(2) 332–336 (February 1997)
dc.identifier.uri http://dyuthi.cusat.ac.in/purl/2461
dc.description.abstract Pulsed photoacoustic studies in solutions of C70 in toluene are made using the 532-nm radiation from a frequency-doubled Nd:YAG laser. It is found that contrary to expectation, there is no photoacoustic (PA) signal enhancement in the power-limiting range of laser fluences. Instead, the PA signal tends to saturate during optical power-limiting phenomenon. This could be due to the enhanced optical absorption from the photoexcited state and hence the depletion of the ground-state population. PA measurements also ruled out the possibility of multiphoton absorption in the C70 solution. We demonstrate that the nonlinear absorption leading to optical limiting is mainly due to reverse saturable absorption. en_US
dc.description.sponsorship Cochin University of Science and Technology en_US
dc.language.iso en en_US
dc.publisher Society of Photo-Optical Instrumentation Engineers en_US
dc.subject photoacoustic and photothermal science and engineering en_US
dc.subject pulsed photoacoustics en_US
dc.subject fullerenes en_US
dc.subject optical limiting. en_US
dc.title Photoacoustic signal saturation and optical limiting in C70-toluene solution en_US
dc.type Working Paper en_US
dc.contributor.faculty Technology en_US


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