Nonlinear optical properties of organic and polymeric materials
29 Sep 1983-
About: The article was published on 1983-09-29 and is currently open access. It has received 762 citations till now.
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TL;DR: In this paper, the absorption spectra, oscillator strengths, ground state and excited state dipole moments, and molecular second order polarizability coefficients (β CT ) due to donor-acceptor charge transfer in four trisubstituted ethylenes, namely 1,1-bisdimethylamino-2-nitroethylene, 1, 1-bispyrolidino-1-nitrogen-2.
3 citations
TL;DR: In this article, the authors present a procedure for the modeling of the dispersion of the nonlinear optical response of complex molecular structures that is based strictly on the results from experimental characterization.
Abstract: We present a procedure for the modeling of the dispersion of the nonlinear optical response of complex molecular structures that is based strictly on the results from experimental characterization. We show how under some general conditions, the use of the Thomas-Kuhn sum-rules leads to a successful modeling of the nonlinear response of complex molecular structures.
3 citations
Cites background from "Nonlinear optical properties of org..."
...All-optical information transmission, storage and retrieval, and manipulation requires good nonlinear-optical materials.[1-3] While at present, inorganic piezoelectric single crystals, such as LiNiO3 , are used in conjunction with laser diode sources to provide electro-optic amplitude modulation for long-haul optical data transmission systems, the purely electronic response of organic photonic materials would provide higher modulation frequencies, and, hence, wider bandwidths when used in modulator devices....
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TL;DR: A nonlinear optical crystal of potassium-doped meta-Nitroaniline (mNAK) was grown by slow evaporation method using methanol as solvent.
Abstract: A nonlinear optical crystal of potassium-doped meta-Nitroaniline (mNAK) was grown by slow evaporation method using methanol as solvent. The growth mechanism was understood by chemical etching studies. The presence of potassium in the crystal was identified by energy-dispersive X-ray diffraction. Lattice parameters for the title crystal were determined by single-crystal X-ray diffraction and powder X-ray diffraction techniques, and the functional groups in the crystal were revealed by Fourier transform infrared study. Optical properties of the crystal were evaluated by UV-Vis-NIR transmission and absorption spectra in the range of 200–1000 nm. Thermal stability of the crystal was studied by thermo gravimetric analysis and differential thermal analysis. Mechanical properties of the crystal were analyzed using Vicker's microhardness technique. Second harmonic generation efficiency of the crystal was examined using pulsed Nd:YAG laser. Finally, the third-order nonlinear optical properties of the crystal were measured using single-beam Z-scan technique.
3 citations
01 Jan 1989
TL;DR: In this paper, the present state of the art in these new fields of polymers for electronics and photonics is reviewed and a special emphasis is laid on recent results from our laboratories.
Abstract: Recently, polymers show promising prospects as active constituents of optical and electronic devices, especially polymers for nonlinear optics and conducting polymers. In a remote future even organic ferromagnets and molecular electronics may become more than wishful thinking. For this reason several fundamental aspects of these materials are the subject of intensive research. In this paper we will review the present state of the art in these new fields of polymers for electronics and photonics. Special emphasis will be laid on recent results from our laboratories.
3 citations
TL;DR: In this paper, the nature of polaron and polarexciton-like excited states of polyyne chains was investigated using a self-consistent field configuration interaction procedure, and the extent of the lattice defect and the existence of the spin density wave and charge density wave were investigated.
3 citations