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|Title:||Two-photon assisted excited state absorption in multiferroic YCrO3 nanoparticles|
Sandeep, Suchand C.S.
|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.|
|Copyright:||2012 Elesvier B.V.|
|Appears in Collections:||Research Papers (LAMP)|
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