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, the hyperpolarizabilities of linear polyenes are shown to be extremely sensitive to confonnational changes and to the presence of charges along the conjugated chain.
92 citations
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TL;DR: In this article, a 1:1 inclusion complex between p-nitroaniline and β-cyclodextrin has been observed to genarate second harmonic radiation when exposed to the output of Nd-YAG laser.
91 citations
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TL;DR: In this paper, the spontaneous emission from deoxyribonucleic acid (DNA) derivative films was achieved by doping with a hemicyanine dye which is well known as a nonlinear optical molecule.
Abstract: Amplified spontaneous emission (laser action without cavities) from deoxyribonucleic acid (DNA) derivative films was achieved by doping with a hemicyanine dye which is well known as a nonlinear optical molecule. The amplification confirmed by spectral narrowing and superlinear dependence of the emission intensity on the pumping was observed from the complex films when the film samples were irradiated with a nanosecond laser at the intensity above a threshold value (∼20 μJ). The durability and low threshold values suggest the possibility of DNA complexes as a practical candidate for thin-film dye lasers.
90 citations
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TL;DR: In this paper, the second-harmonic radiation was observed to be generated by metal-pyridine and bipyridine complexes when exposed to the 1.06 μm output of a Nd-YAG laser.
88 citations
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TL;DR: In this paper, an ab initio calculation of polarizability and second hyperpolarizability for the benzene molecule including electron-electron correlation was performed using the finite field method.
Abstract: We present an ab initio calculation of polarizability and second hyperpolarizability for the benzene molecule including electron–electron correlation. The finite field method is used. For each selected strength of the applied electric field the energy of the benzene molecule is calculated using the self‐consistent field method (SCF) as well as with its Mo/ller–Plesset correction in the second order (MP‐2). Then the microscopic optical nonlinear responses are calculated by fitting both the SCF energy and the MP‐2 energy to a polynomial in the field strength. We find that electron correlation significantly enhances the second hyperpolarizability. For the polarizability, our computed value shows an excellent agreement with the experimentally measured value. For the second hyperpolarizability, the computed value using MP‐2 energy shows a reasonable agreement with that reported by the electrical field induced second harmonic (EFISH) generation but a poor agreement with the result of degenerate four wave mixing...
87 citations