Holographic surface gratings in iron-doped lithium niobate

Citation
Ss. Sarkisov et al., Holographic surface gratings in iron-doped lithium niobate, APPL PHYS L, 79(7), 2001, pp. 901-903
Citations number
20
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS LETTERS
ISSN journal
0003-6951 → ACNP
Volume
79
Issue
7
Year of publication
2001
Pages
901 - 903
Database
ISI
SICI code
0003-6951(20010813)79:7<901:HSGIIL>2.0.ZU;2-8
Abstract
Surface gratings associated with holographic volume gratings in photorefrac tive crystals of iron-doped lithium niobate have been studied using diffrac tion of a reflected probe beam and high-resolution phase-shifted interferom etric profilometry. Both techniques show that the surface gratings exist in the form of periodical corrugations of the same period as that of the volu me grating. The maximum amplitude of the periodical surface relief measured by both techniques is close to 6.5 nm. We also demonstrated that the perio dical electric forces on the surface were capable of assembling polystyrene microspheres along the fringes of the grating. Large amplitude of the peri odic electric field (1.6x10(4) V/cm) is associated with the photogalvanic e ffect. (C) 2001 American Institute of Physics.