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Ladislav Bohatý

Crystallographic aspects of the linear electro-optic effect

Keywords: Electro-optics, Electrostriction

Aspects of symmetry and crystal chemistry of the linear electrooptic effect are analyzed on the basis of new experimental results.
Relations between the linear electro-optic effect [r^σ_ijk] (unclamped) and the linear electrostrictive effect [d_ijk] are investigated by comparison of the longitudinal effects r´₁₁₁ and d´₁₁₁; The relation |d´₁₁₁|^max/|r´₁₁₁|^max≥1 is valid for 41 of the hitherto available data of 49 crystals.
Guidelines for the search of crystals with high electro-optic effects are reviewed. The most important keywords for a "chemical engineering" of new electro-optic materials are: pyroelectric symmetry groups; "polar" structural units; structures with strongly asymmetric bonds; molecules with high hyperpolarizabilities; structures tending towards a dielectric instability.

Zeitschrift für Kristallographie, Oldenbourg Wissenschaftsverlag

Print ISSN: 0044-2968
Volume: 166, 01/1984
Pages: 097 - 119

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