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Proceedings Paper

Dihedral rigid molecule in crystal engineering for optimized phase-matchable SHG: DNBB
Author(s): Tetsuya Tsunekawa; Tetsuya Gotoh; Hiroshi Mataki; Masao Iwamoto
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Paper Abstract

It is important to control a polarization anisotropy, thus, a molecular alignment in obtaining such a crystal that can exhibit optimized phase-matchable second harmonic generation ( SHG ). Along with this view, we designed a novel dihedral rigid molecule which has two nitroaniline moieties rigidly connected each other through two adjacent sp3 carbons. We synthesized the molecules so designed and examined their crystals in SHG activities and phase-matching characteristics by a convenient powder method with a Nd:YAG laser. It has been found that one of crystals, namely, 3,9-dinitro-5a,6, ha, 12-tetrahydro[1,4]benzoxadino[3 ,2-bJ][1,4]- benzoxadine ( DNBB ) crystal manifests larger phase-matchable SHG than N-(4-nitrophenyl)-L-prolinol ( NPP ) crystal so far known as the typical efficient phase-matchable organic crystal. DNBB crystal has been shown to possess much improved material properties ; high thermal stability, distinguished hardness, insolubility to water, no sublimation, and high registivity to optical damage, for device applications in comparison with the crystals of p-nitroaniline derivatives reported so far.

Paper Details

Date Published: 1 December 1990
PDF: 8 pages
Proc. SPIE 1337, Nonlinear Optical Properties of Organic Materials III, (1 December 1990); doi: 10.1117/12.22954
Show Author Affiliations
Tetsuya Tsunekawa, Toray Industries, Inc. (Japan)
Tetsuya Gotoh, Toray Industries, Inc. (Japan)
Hiroshi Mataki, Toray Industries, Inc. (Japan)
Masao Iwamoto, Toray Industries, Inc. (Japan)


Published in SPIE Proceedings Vol. 1337:
Nonlinear Optical Properties of Organic Materials III
Garo Khanarian, Editor(s)

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