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: Propane-1, 3-diaminium nitrate [C3H12N2] (NO3)2 (PDAN) as mentioned in this paper is a hybrid organic-inorganic nonlinear optical material combining an acentric octupolar moiety (nitrate) with a centrosymmetric organic molecule.
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TL;DR: In this paper, a 2-adamantylamino-5-nitropyridine (AANP) crystal was developed for use in frequency converters, which achieved a conver-sion efficiency of 2×10-3W-1 and 10-3 W-1, respectively.
Abstract: We have a developed 2-adamantylamino-5-nitropyridine (AANP) crystal for use in frequency converters. By second-harmonic generation at 1.064 μm coefficients of d31 and d33 were deter-mined to be 80 and 60pm/v, respectively. Angle-tuned phase-matched second-harmonic genera-tion was demonstrated using a lmm AANP bulk crystal at 1.064 μm and 1.32 μm. Its conver-sion efficiency was found to be about 2×10-3W-1 and 10-3W-1, respectively. By using the AANP crystal, optical parametric interaction around 1.3 μm wavelength was also observed.
TL;DR: In this paper, the third-order nonlinear optical properties of lyotropic liquid crystal poly(1,4-phenylene-2,6-benzobisthiazole), PBT, solutions are studied by third harmonic generation measurements.
Abstract: Third-order nonlinear optical properties of lyotropic liquid crystal poly(1,4-phenylene-2,6-benzobisthiazole), PBT, solutions are studied by third harmonic generation measurements. Besides the enhancement observed for this coefficient with respect to the pure PBT, coupling is observed between the mean filed nematic director n and the incident fundamental polarization {vnE0}. Different geometries, with respect to the relative orientation of {vnE0} and n, provided different harmonic Maker Fringe Patterns. These data are compared using refractive index measurements, independently achieved on these materials, and necessary for Maker Fringe analysis.
TL;DR: In this article , the molecular structure of 3-methyl 2-vinyl pyridinium phosphate (3M2VPP) has been optimized by using density functional theory using B3LYP hybrid functional with 6-311++G (d, p) basis set in order to find the whole characteristics of the molecular complex.
Abstract: The molecular structure of 3-methyl 2-vinyl pyridinium phosphate (3M2VPP) has been optimized by using Density Functional Theory using B3LYP hybrid functional with 6-311++G (d, p) basis set in order to find the whole characteristics of the molecular complex. The theoretical structural parameters such as bond length, bond angle, and dihedral angle are determined by DFT methods and are well agreed with the single crystal X-ray diffraction parameters. Theoretical vibrational, highest occupied molecular orbital - lowest unoccupied molecular orbital (HOMO-LUMO), natural bonding orbital (NBO), and electrostatic potential (ESP) analyses have also been performed. Based on the potential energy distribution (PED), the complete vibrational assignments, analysis, and correlation of the compound’s fundamental modes have been determined. Natural bonding orbital (NBO) analysis is used to evaluate the intramolecular charge transfer and hyper-conjugative interaction of the molecule. B3LYP/6-311++G (d, p) basis set determines the electronic properties such as HOMO–LUMO energies and is used to understand the kinetic stability and chemical reactivity of the studied compound. Molecular electrostatic potential (MEP) is used to investigate the electron density distribution and chemical reactive sites of 3M2VPP. The dipole moment, total polarizability, and the first-order hyperpolarizability calculations have been carried out for the studied molecule. Hirshfeld surface analysis has been done to study the intermolecular interactions in the studied complex.