Second-order nonlinearities of polycrystalline molecular films studied on a 20-fs time scale

Jentzch, T, Jupner, HJ, Ashworth, SH and Elsaesser, T (1996) Second-order nonlinearities of polycrystalline molecular films studied on a 20-fs time scale. Optics Letters, 21 (7). pp. 492-494. ISSN 0146-9592

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Abstract

Second-harmonic generation in polycrystalline pentacene films of submicrometer thickness by pulses of 18-fs duration is studied. We observe a second-order nonlinearity of as much as d(eff) = 0.045 pm/V, which is resonantly enhanced at wavelengths near 790 nm. Off-resonance autocorrelation studies demonstrate a quasi-instantaneous nonlinear response of the material, whereas experiments on resonance point to a finite response time T-2 of the order of 15 fs.

Item Type: Article
Faculty \ School: Faculty of Science > School of Chemistry
Depositing User: Rachel Smith
Date Deposited: 12 Sep 2011 08:28
Last Modified: 21 Apr 2020 21:30
URI: https://ueaeprints.uea.ac.uk/id/eprint/29534
DOI: 10.1364/OL.21.000492

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