Measurement of the dc Kerr and electrostrictive phase modulation in silica

Citation
Ac. Liu et al., Measurement of the dc Kerr and electrostrictive phase modulation in silica, J OPT SOC B, 18(2), 2001, pp. 187-194
Citations number
32
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics
Journal title
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
ISSN journal
0740-3224 → ACNP
Volume
18
Issue
2
Year of publication
2001
Pages
187 - 194
Database
ISI
SICI code
0740-3224(200102)18:2<187:MOTDKA>2.0.ZU;2-A
Abstract
We report, to our knowledge, the first polarization-resolved measurement of the frequency dependence of both the electronic and the electrostrictive c ontributions to the de Kerr coefficient in silica. At the acoustic resonanc e the perpendicular polarization phase shift is a factor of 2.3 times great er than in the parallel polarization, confirming the presence of strong ele ctrostriction. We find good agreement between the phase-shift measurements and theoretical models of both the polarization and frequency dependence. T he analysis indicates the de Kerr coefficient chi ((3))(1111)(omega; omega, 0, 0) to be 1.9 x 10(-22) m(2)/V-2. From these results the electrostrictiv e contribution to a poled-silica device near the device acoustic resonance is expected to be r(33,Es) = 28 pm/V, over an order of magnitude greater th an the electronic Kerr electro-optic coefficient r(33,Kerr) = 0.2 pm/V. (C) 2001 Optical Society of America OCIS codes: 190.3270, 160.2750, 160.6030, 190.0190, 230.2090.