Title
Measurement of the induced refractive index in a photothermorefractive glass by a liquid-cell shearing interferometer
Abbreviated Journal Title
Appl. Optics
Keywords
BRAGG GRATINGS; RADIATION; Optics
Abstract
A liquid-cell shearing interferometer was developed to measure refractive-index variations (Deltan) in transparent materials. The cell was filled with a liquid having a matched refractive index. The achieved resolution was better than 1/1000 of a fringe shift and resulted in a Deltan measurement sensitivity down to 10(-7) for 1-mm-thick samples. A refractive-index increment in photothermorefractive glass of up to 5 x 10(-6) was observed after UV exposure at 325 nm. A refractive-index decrement of up to 1 x 10(-3) was observed after thermal development of the exposed sample. It was proved that photothermorefractive glass obeys the reciprocity law; i.e., Deltan depends on the UV dosage but does not depend on the irradiance. (C) 2002 Optical Society of America.
Journal Title
Applied Optics
Volume
41
Issue/Number
10
Publication Date
1-1-2002
Document Type
Article
Language
English
First Page
1864
Last Page
1871
WOS Identifier
ISSN
1559-128X
Recommended Citation
"Measurement of the induced refractive index in a photothermorefractive glass by a liquid-cell shearing interferometer" (2002). Faculty Bibliography 2000s. 3176.
https://stars.library.ucf.edu/facultybib2000/3176