All optical poling of glasses

Photoinduced nonlinear optical effects in the Pr doped BiB3O6 glass nanoparticles incorporated into the polymer matrices

“…[1][2][3][4]. Usually this effect is called optical poling and the first explanations were based on the light induced self-organization of the excited dipole moments [5] or taking into account of photogalvanic effect [6][7][8]. It was established an occurrence of optically induced grating which was considered as a superposition of charge transfer states under interference of multi-photon processes without transferring electron to the conduction band [9].…”

Peculiarities of the outside influences on all-optical poling

“…All-optical poling (OP) is so called an induction in medium the long lived space periodic electrostatic polarization P(r) by the influence of the multi-chromatic inter-coherent multiple-frequency radiation that leads to a formation of the nonlinear optical structures of the second-order polarizability inside the amorphous materials [1][2][3] . The OP creates a reversible change of the symmetry by local range transforming of the isotropic medium into an optically uniaxial material inside which nonlinear tree-wave interactions become possible.…”

“…The changes in the optical properties of the mediums are presented in many observed phenomena found experimentally, for example, photo-induced second harmonic generation 1,2 (PSHG) and degenerate amplification of low light signals of sub-harmonic 4 inside the formed gratings with the nonlinear polarizability χ (2) , which appear due to the optical poling of the isotropic mediums; Bragg self-diffraction and constructive light scattering 5 from the induced modulations Δn of the refractive index due to the OP; light-electric instability and stimulated increase in the anisotropy due to the OP and etc. The possibility of the OP of different isotropic media (glasses and waveguides, fibers, polymer consisted and hybrid organic-nonorganic films [2][3][4][5][6][7][8][9][10][11][12][13][14][15] ) has been shown by now. The observed phenomenon of the all-optical poling and the processes of the conversion of a radiation in the transformed media attract attention of scientists both from the point of view of fundamental scientific research and due to the possibility of the obtaining new broadband optoelectronic devises for laser optics, microscopy and bio-photonics.…”

Photo-integrated volumetric nonlinear structures for micro-optics

“…Optical poling is so called an induction in medium the long lived space periodic electrostatic polarization P(r) by influence of the multi-chromatic inter-coherent multiple-frequency radiation that leads to a formation of the nonlinear optical structures of second-order polarizability photo-integrated in amorphous materials 1 . Optical poling creates a reversible change of the symmetry by local range transforming of the isotropic medium into an optically uniaxial material inside which nonlinear tree-wave interactions become possible.…”