Abstract
Interest in organic molecules for use in nonlinear optics (NLO) is still growing because of their potential use in optical communication, optical switching, frequency conversion, etc. For these purposes incorporation of organic materials into thin films is necessary. Polymer systems are well suited for thin-film applications. But the guest-host type systems show some major disadvantages; poor temporal stability of the molecular orientation after alignment and insufficient solubility of the NLO chromophorein polymer matrix And the most chromophores containing electron-donating and electron-withdrawing groups at the ends of the p-coniugated system have charge-transfer absorption in the visible range. As a result, many organic materials were not suitable for frequency doubling in UV-visible region.
© 1997 Optical Society of America
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