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Title: Two-photon assisted excited state absorption in multiferroic YCrO3 nanoparticles
Authors: Krishnan, Shiji
Sandeep, Suchand C.S.
Philip, Reji
Nanadakumar, Kalarikkal
Issue Date: Mar-2012
Publisher: Elesvier B.V.
Citation: Chemical Physics Letters, 2012, Vol.529, p59
Abstract: We report a novel functionality for the ferroelectric-antiferromagnet YCrO3 powder of optical limiting upon illumination by nanosecond laser pulses at 532 nm. The optical limiting properties are investigated using the open aperture z-scan technique. The obtained nonlinearity fits to a three-photon like absorption mechanism. It is proposed that this nonlinearity is caused by two-photon absorption, followed by excited state absorption. Two different sized samples were investigated and the nonlinearity is found to be size dependent.
Description: Restricted Access.
ISSN: 0009-2614
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Copyright: 2012 Elesvier B.V.
Appears in Collections:Research Papers (LAMP)

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