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Anomalously Large Pockels Effect in ZnO‐F Single Crystalline Films Deposited on Bare Glass
Author(s) -
Kityk I.V.,
MigalskaZalas A.,
Ebothe J.,
Elchichou A.,
Addou M.,
Bougrine A.,
Chouane A.Ka.
Publication year - 2002
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/1521-4079(200204)37:4<340::aid-crat340>3.0.co;2-l
Subject(s) - materials science , pockels effect , substrate (aquarium) , charge density , doping , fluorine , charge (physics) , electronic band structure , thin film , wavelength , chemical physics , condensed matter physics , optics , nanotechnology , optoelectronics , chemistry , metallurgy , oceanography , physics , quantum mechanics , geology , laser
Large linear electrooptics (the Pockels effect) of up to 17 pm/V for the wavelength 435 nm has been observed in ZnO films doped by fluorine and deposited on bare glass. In order to describe the phenomenon observed, a complex approach, including self‐consistent band structure calculations together with the appropriate molecular dynamics simulations of the interfaces, was applied. The origin of the effect observed is linked to substantial charge density non‐centrosymmetry between the wurtzitelike crystalline films and the bare glass substrate, as well as to additional charge density polarisation caused by the fluorine.