Interferometric measurement of refractive-index change in photosensitive glass

Authors
Dennis, T Gill, EM Gilbert, SL
Citation
T. Dennis et al., Interferometric measurement of refractive-index change in photosensitive glass, APPL OPTICS, 40(10), 2001, pp. 1663-1667
Citations number
11
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics
Journal title
APPLIED OPTICS
ISSN journal
00036935 → ACNP
Volume
40
Issue
10
Year of publication
2001
Pages
1663 - 1667
Database
ISI
SICI code
0003-6935(20010401)40:10<1663:IMORCI>2.0.ZU;2-S
Abstract
We report on a technique for determining the change in the refractive index of photosensitive glass. We have demonstrated our interferometer-based tec hnique on fiber preform and bulk glass samples, achieving an optical-path-d ifference (OPD) repeatability of 0.2 nm. For the bulk glass sample we measu red an OPD of 15.2 +/- 3.0 nm, corresponding to an index change of 2.1 +/- 0.7 x 10(-5). Our technique was found to be insensitive to the effects of p hotodarkening and material compaction.