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 article, a series of chalcone derivatives with a general formula of CH3CnH2nCOOC6H4CH:CHCOC 6H4 were well synthesized and crystallized from organic solution.
Abstract: A series of new chalcone derivatives with a general formula of CH3CnH2nCOOC6H4CH:CHCOC6H4 where n = 10, 12, 14, and 16 were well synthesized and crystallized from organic solution. The physical properties as well as the chemical formulations of these compounds were determined by the microanalysis and spectroscopic methods (FTIR, and 1H and 13C NMR). Crystal structure of CH3C10H20COOC6H4CH:CHCOC6H4 was determined by single-crystal X-ray diffraction analysis. The space group of this crystal is triclinic with a = 5.8570(3) A, b = 8.5640(5) A, c = 24.1592(12) A, V = 1175.82(11) A3, and Z = 2, and its structure was refined to R(F) = 0.055 and ωR(F 2 ) = 0.161. The elongated terminal alkyl chain is fully stretched in solid phase. Phase-transition temperatures and the thermal parameters were obtained from differential scanning calorimetry (DSC). The texture observation was carried out with a polarizing optical microscope (POM) over heating and cooling cycles. All of the title compounds except undecylcar...
27 citations
TL;DR: Bulk single crystals of Larginine tetrafluoroborate (L-AFB) have been successfully grown from solution by the temperature lowering method as mentioned in this paper, even though the mother liqueur became viscous.
27 citations
TL;DR: In this paper, the linear and quadratic nonlinear-optical properties of the orthorhombic P 212121 5-nitrouracil (5NU) molecular crystals are fully characterized.
Abstract: The linear and quadratic nonlinear-optical properties of the orthorhombic P 212121 5-nitrouracil (5NU) molecular crystals are fully characterized. d14 measurements, performed by two different methods, and second-harmonic conversion efficiencies are reported. Collinear phase-matching configurations for sum-frequency generation are both calculated in the special case of third-harmonic generation and experimentally demonstrated. 5NU permits, in particular, efficient blue-light generation from a pulsed, 1.34-μm Nd3+:YAG laser source by a sequence of second-harmonic and (2ω, ω) sum-mixing processes. The good stability in air and the high damage threshold are accounted for by the presence of hydrogen bonds in the crystalline structure.
26 citations
TL;DR: In this paper, the use of electro-optic sampling techniques in the measurement of the electrooptic frequency response of a poled organic layer, to 20 GHz, was reported.
Abstract: We report the use of electro‐optic sampling techniques in the measurement of the electro‐optic frequency response of a poled organic layer, to 20 GHz. The organic material tested was a Disperse Red 1/poly(cyclohexyl methacrylate) guest/host system which was deposited and poled on top of a GaAs based coplanar waveguide transmission line. The GaAs substrate also served as the reference electro‐optic material in the hybrid structure, which was optically sampled from both sides.
26 citations
TL;DR: It is demonstrated that excited singlet state absorption and stimulated emission or triplet state absorption can be utilized for spatial light modulation by organic molecules and the modulating laser intensity needed to achieve 45% modulation can be as low as 100 nW/microm(2).
Abstract: It is demonstrated that excited singlet state absorption and stimulated emission or triplet state absorption can be utilized for spatial light modulation by organic molecules. A kinetic analysis shows that for some favorable cases the modulating laser intensity needed to achieve 45% modulation can be as low as 100 nW/microm(2). The potential for spatial light modulation is discussed.
26 citations
Cites background from "Nonlinear optical properties of org..."
...(4) for negligible excited-state absorption by the modulating laser we obtain N(T1) = NaSO(m)klscTjm/(klsc + 1/T10)...
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...kiSC + 1/TS0 901WmIm N(I) = [N(S 0 )/(kjsC + 1/T10)] (m)4 (m)r-I2 X (4) as (m)kscrToIm...
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...(4) and (8) the absorption coefficient can be obtained from Eq....
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