Frequency shifting through cascaded second-order processes in a N-(4-nitrophenyl)- L-prolinol crystal

We exploit the high second-order susceptibility of the organic crystal N-(4-nitrophenyl)-L-prolinol to accomplish, through a cascaded second-order process, wavelength conversion of a signal pulse (from 1.16 to 1.14 microm) under the action of a pump pulse (at 1.15 microm). In a 2.8-mm-thick crystal,...

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Bibliographic Details
Published in:Optics letters 1998-03, Vol.23 (6), p.439-441
Main Authors: Banfi, G P, Datta, P K, Degiorgio, V, Donelli, G, Fortusini, D, Sherwood, J N
Format: Article
Language:English
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Summary:We exploit the high second-order susceptibility of the organic crystal N-(4-nitrophenyl)-L-prolinol to accomplish, through a cascaded second-order process, wavelength conversion of a signal pulse (from 1.16 to 1.14 microm) under the action of a pump pulse (at 1.15 microm). In a 2.8-mm-thick crystal, wavelength conversion with unit gain was obtained with a pump peak intensity as low as 9 MW/cm(2) . At low intensities, in the limit of negligible conversion where the cascading effect can be described through an effective third-order susceptibility, we derive |(x)((3))(eff) | approximately 2.4 x 10(-17) m(2)/V(2), which is ~10(2) larger than the nonresonant (x)((3)) of conjugated polymers or semiconductors.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.23.000439