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

Jentzch, T, Jupner, HJ, Ashworth, SH ORCID: https://orcid.org/0000-0003-4213-3541 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:	24 Oct 2022 04:08
URI:	https://ueaeprints.uea.ac.uk/id/eprint/29534
DOI:	10.1364/OL.21.000492

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