Title
Heterodyne Technique For The Direct Measurement Of The Amplitude And Phase Of Photorefractive Space-Charge Fields
Abbreviated Journal Title
J. Opt. Soc. Am. B-Opt. Phys.
Keywords
CRYSTALS; BATIO3; PHOTOCONDUCTIVITY; GRATINGS; SHIFT; Optics
Abstract
A heterodyne technique is presented for the independent, direct measurement of the amplitude and phase of photorefractive space-charge fields during uninterrupted buildup and photoinduced decay. The technique is based on using a probe beam with a frequency slightly different from that of the two recording beams to continuously read photorefractive phase gratings during all stages of formation and decay. The probe beam is virtually collinear with one of the recording beams. The beat between the diffracted component of the frequency-shifted probe beam and the transmitted component of the recording beam produces a heterodyne beam component. This heterodyne component contains the photorefractive grating information and is monitored to yield the amplitude and phase of the photorefractive fields. This nondestructive characterization technique exhibits excellent sensitivity and permits photorefractive phase measurements to within 1.5-degrees.
Journal Title
Journal of the Optical Society of America B-Optical Physics
Volume
11
Issue/Number
3
Publication Date
1-1-1994
Document Type
Article
Language
English
First Page
470
Last Page
475
WOS Identifier
ISSN
0740-3224
Recommended Citation
"Heterodyne Technique For The Direct Measurement Of The Amplitude And Phase Of Photorefractive Space-Charge Fields" (1994). Faculty Bibliography 1990s. 1051.
https://stars.library.ucf.edu/facultybib1990/1051
Comments
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