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Optics Letters

Optics Letters


  • Vol. 23, Iss. 6 — Mar. 15, 1998
  • pp: 439–441

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

G. P. Banfi, P. K. Datta, V. Degiorgio, G. Donelli, D. Fortusini, and J. N. Sherwood  »View Author Affiliations

Optics Letters, Vol. 23, Issue 6, pp. 439-441 (1998)

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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 µm) under the action of a pump pulse (at 1.15 µm). In a 2.8-mm-thick crystal, wavelength conversion with unit gain was obtained with a pump peak intensity as low as 9 MW/cm2 . 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 | ≈ 2.4 × 10-17 m2/V2, which is ~102 larger than the nonresonant x(3) of conjugated polymers or semiconductors.

© 1998 Optical Society of america

OCIS Codes
(160.4890) Materials : Organic materials
(190.0190) Nonlinear optics : Nonlinear optics
(190.2640) Nonlinear optics : Stimulated scattering, modulation, etc.

G. P. Banfi, P. K. Datta, V. Degiorgio, G. Donelli, D. Fortusini, and J. N. Sherwood, "Frequency shifting through cascaded second-order processes in a N-(4-nitrophenyl)- L-prolinol crystal," Opt. Lett. 23, 439-441 (1998)

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