Conversion of spectral characteristics of laser radiation in periodic domain structures written by the electron-beam method in planar waveguides formed by Ti diffusion in Y-oriented LiNbO₃

Perturbations of a dielectric tensor induced by domain walls of periodic domain structures in ferroelectric crystals: contribution to the Bragg diffraction of light waves

“…Periodic domain structures in ferroelectric crystals and optical waveguides of this type are effectively used both for conversion of the spectral characteristics of laser radiation in the quasi-phase-matched regime [1][2][3][4][5][6][7] and for electro-optic applications [7][8][9][10][11][12]. The changes in the sign of spontaneous polarization occurring within the domain walls lead to perturbations of the optical properties of the crystal, which are directly associated with the quadratic electro-optic effect, as well as with an additional elasto-optic contribution due to induced elastic strains [13][14][15].…”

Effect of titanium in LiNbO3 on domain growth during e-beam writing

“…The results obtained show ways to match the conditions of e-beam irradiations to the waveguide thickness in order to optimize the grating position, uniformity of domains and waveguide quasi-phase-matching SHG [4].…”