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MonographDOI

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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Journal ArticleDOI
TL;DR: In this paper, the rotational relaxation of a second-order nonlinear optical polymer thin film is investigated at the ZARM drop tower facility at Bremen, Germany, and the results of microgravity experiments are reported.

1 citations

Proceedings ArticleDOI
07 Jul 1997
TL;DR: In this article, the authors report on a computer-controlled experiment set-up for growing organic nonlinear optical (NLO) crystals by effusive-ampoule physical vapor transport (EAPVT), which results in considerably higher transport rates than are obtained in closed ampoule arrangements.
Abstract: We report on a novel computer-controlled experiment set-up for growing organic nonlinear optical (NLO) crystals by effusive- ampoule physical vapor transport (EAPVT). In this approach, incongruent or impurity vapor components are continuously removed from the vicinity of the growing crystal to vacuum. This results in considerably higher transport rates than are obtained in closed ampoule arrangements. As a consequence, crystal growth can be conducted with reduced temperature gradients, which is important for the growth of structurally perfect crystals. We present design considerations for an EAPVT apparatus, its construction, and its application to the growth of single crystals of 4-(N,N-dimethylamino)-3- acetamidonitrobenzene (DAN), an organic NLO material. The insight gained from this ground-based experimental work was used for the design of the flight hardware used aboard the U.S. Space Shuttle.© (1997) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

1 citations

Proceedings Article
26 Apr 1987
TL;DR: In this article, a conjugated polymer was used to study the nonlinear optical response of this potentially useful class of optoelectronic materials, and polyacetylene provided a unique opportunity for studying the non linear optical response.
Abstract: Conjugated polymers possess a 1-D band structure; a property which when coupled to their large intrachain bandwidth allows extensive 1-D delocalization of the electronic wave function. The unique delocalization is predicted to give rise to extremely fast (<1 ps) and large electronic third-order optical susceptibilities [χ(3)]. χ(3) the measure of the change in the index of refraction with the pulse intensity and is the most important material parameter for use in an all-optical device. As the prototype conjugated polymer, polyacetylene provides a unique opportunity for studying the nonlinear optical response of this potentially useful class of optoelectronic materials.

1 citations

Journal ArticleDOI
TL;DR: In this article, a series of organic-inorganic hybrid materials formed by the reaction of (E)−N−butyl−4−(2−(4′−dimethylaminophenyl)ethenyl)pyridinium cations and heteropolyanions with the stoichiometry of (C19H25N2)7K3[P2Mo4W13MO62] (M=Mn, Co, Ni, Cu and Zn), have been synthesized and characterized by elemental analyses, thermogravimetric and
Abstract: A series of organic–inorganic hybrid materials formed by the reaction of (E)‐N‐butyl‐4‐(2‐(4′‐dimethylaminophenyl)ethenyl)pyridinium cations and Dawson heteropolyanions with the stoichiometry of (C19H25N2)7K3[P2Mo4W13MO62] (M=Mn, Co, Ni, Cu and Zn), have been synthesized and characterized by elemental analyses, thermogravimetric and differential thermal analyses, IR spectra, UV‐Vis spectra, solid diffuse reflectance UV‐Vis‐near IR spectra and fluorescence spectra. The results indicate that interaction between the hemicyanine cations and the heteropolyanions exists in the hybrid materials and varies upon changing M from Mn to Zn. The hybrid materials are thermally stable from room temperature to ca. 320 °C.

1 citations