FIXING OF PHOTOREFRACTIVE VOLUME HOLOGRAMS IN K1-YLIYTA1-XNBXO3

Authors
LEYVA V ENGIN D TONG XL TONG M YARIV A AGRANAT A
Citation
V. Leyva et al., FIXING OF PHOTOREFRACTIVE VOLUME HOLOGRAMS IN K1-YLIYTA1-XNBXO3, Optics letters, 20(11), 1995, pp. 1319-1321
Citations number
13
Categorie Soggetti
Optics
Journal title
Optics letters → ACNP
ISSN journal
01469592
Volume
20
Issue
11
Year of publication
1995
Pages
1319 - 1321
Database
ISI
SICI code
0146-9592(1995)20:11<1319:FOPVHI>2.0.ZU;2-S
Abstract
We report the fixing of photorefractive holographic gratings with high efficiency in a sample of K1-yLiyTa1-xNbxO3 doped with Cu, V, and Ti. Holograms are thermally fixed through the screening of a photorefract ive space-charge field by a nonphotoactive species at elevated tempera tures. Fixed holograms are revealed by illumination at lower temperatu res. Diffraction efficiencies of 25% in a 0.54-cm-thick sample are mea sured. Holograms undergo thermal decay with a 0.67-eV activation energ y.