Optical induction of 3D refractive lattices in doubly doped LiNbO3 photorefractive crystal
Abstract
The optical induction of 3D rotational symmetry refractive lattices in doubly doped photorefractive and photochromic LiNbO3:Fe:Cu crystal by combined interferometric-mask method was performed. The method is based on the spatial light modulation by amplitude mask in the transverse plane and the use of counter-propagating beam geometry building up a Gaussian standing wave, which defines the light intensity modulation in the axial direction with half-wavelength periodicity. Masks with rotationally symmetrical structures are used in the experiment. The created intensity pattern was imparted into the LiNbO3:Fe:Cu crystal thus creating refractive lattice with the periods of 20 – 60 µm in the radial and azimuthal directions and 266 nm in the axial direction. The refractive and dispersive properties of the recorded lattices were studied.
Keywords
Photonic lattice,
photorefractive and photochromic effects,
lithium niobate,
micro- and nano-structures
Supporting agencies: This work was supported by International Science and Technology Center Grant, Project A-1517 and National Grant of State Committee of Science of Armenia, Project 1-6/HK.
About the Authors
A. Badalyan
Institute for Physical Research, National Academy of Sciences of Armenia
Armenia
Armenia
0203, Ashtarak-2
P. Mantashyan
Institute for Physical Research, National Academy of Sciences of Armenia
Armenia
Armenia
0203, Ashtarak-2
V. Mekhitaryan
Institute for Physical Research, National Academy of Sciences of Armenia
Armenia
Armenia
0203, Ashtarak-2
V. Nersesyan
Institute for Physical Research, National Academy of Sciences of Armenia
Armenia
Armenia
0203, Ashtarak-2
R. Drampyan
Institute for Physical Research, National Academy of Sciences of Armenia; Armenian – Russian (Slavonic) University
Armenia
Armenia
0203, Ashtarak-2
H. Emin str. 123, 0051, Yerevan
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Review
For citations:
Badalyan A., Mantashyan P., Mekhitaryan V., Nersesyan V., Drampyan R. Optical induction of 3D refractive lattices in doubly doped LiNbO3 photorefractive crystal. Nanosystems: Physics, Chemistry, Mathematics. 2014;5(2):210–216.
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