najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМОnajo-884Research ArticlePHYSICSФИЗИКАOptical induction of 3D refractive lattices in doubly doped LiNbO3 photorefractive crystalBadalyanA.

0203, Ashtarak-2

MantashyanP.

0203, Ashtarak-2

MekhitaryanV.

0203, Ashtarak-2

NersesyanV.

0203, Ashtarak-2

vars.nersesyan@gmail.comDrampyanR.

0203, Ashtarak-2

H. Emin str. 123, 0051, Yerevan

Institute for Physical Research, National Academy of Sciences of ArmeniaArmeniaInstitute for Physical Research, National Academy of Sciences of Armenia; Armenian – Russian (Slavonic) UniversityArmenia20141408202552210–216Copyright © Badalyan A., Mantashyan P., Mekhitaryan V., Nersesyan V., Drampyan R., 20252025Badalyan A., Mantashyan P., Mekhitaryan V., Nersesyan V., Drampyan R.Badalyan A., Mantashyan P., Mekhitaryan V., Nersesyan V., Drampyan R.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/884

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.

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The authors declare that there are no conflicts of interest present.