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Optics Letters

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  • Vol. 18, Iss. 24 — Dec. 15, 1993
  • pp: 2093–2095

Near-resonant refractive nonlinearity in polydiacetylene 9-BCMU thin films

S. Molyneux, A. K. Kar, B. S. Wherrett, T. L. Axon, and D. Bloor  »View Author Affiliations


Optics Letters, Vol. 18, Issue 24, pp. 2093-2095 (1993)
http://dx.doi.org/10.1364/OL.18.002093


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Abstract

The spectral dependence of the third-order nonlinear susceptibility χ(3) (ω; ω, −ω, ω) of the polydiacetylene 9-BCMU has been measured, and the imaginary component is found to change sign in the exciton absorption tail. In the red-phase material, a significant refractive nonlinearity was observed around the 1.93-eV input energy range, whereas the absorption change was too small to quantify. A magnitude for the nonlinear refractive index coefficient |n2| = 1.9 (±1.0) × 10−10 cm2 W−1 was measured at this Im χ(3) = 0 position, indicating good figures of merit for all-optical switching.

© 1993 Optical Society of America

History
Original Manuscript: July 15, 1993
Published: December 15, 1993

Citation
S. Molyneux, T. L. Axon, D. Bloor, A. K. Kar, and B. S. Wherrett, "Near-resonant refractive nonlinearity in polydiacetylene 9-BCMU thin films," Opt. Lett. 18, 2093-2095 (1993)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-18-24-2093


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