R. Vlokh, M. Kostyrko, V. Kruchkevych
The article is devoted to the phenomenological investigation of the possibility of the optical activity appearing under the photorefractive effect in the non-gyrotropic crystals. On the base of the symmetry analysis it is shown that in the crystals that belong to the planar and axially-inversion point groups of the symmetry (-43m, -6m2, -6, 3m, 6mm, 4mm) optical activity can be induced by the electrogyration effect caused by the photorefractivity. In the crystals that belong to the point group of symmetry 6mm, 4mm, 3m, -6, -6m2 optical activity can be induced by photovoltaic and linear electrogyration effects while in the crystals that belong to the -43m group of the symmetry - by photovoltaic and quadratic electrogyration effects. The electrogyration effect in the LiNbO3 crystal was experimentally investigated. The component of electrogyration tensor was determined as g41=(3.39±1.3)´10-12m/V and electrogyration diffraction effectivity was calculated: h=1.5%. It was shown that the diffraction of light on the electrogyration photorefractive grating should be only anisotropical
Key words: electrogyration, photorefraction effect, optical activity
doi 10.3116/16091833/2/2/86/2001
1. Vlokh OG, 1984. Spatial dispersion effect in the parametrical crystallooptics.
Lviv Vyscha shcola 155.
2. Kukhtarev NV, Muravyev VV, Semenec TI, 1986. Polarization characteristics
of the self-diffraction in the photorefractive crystals, Kiev, Acad.Sciencies
of the USSR, Institute of Phys. 21.
3. Kukhtarev NV, 1985. Anisotropical self-diffraction in the photorefractive
gyrotropic crystals. Kiev, Acad.Sciensies of the USSR, Institute of Phys.
23.
4. Shepelevich VV, Firsov AA, 1997. Proceedings of Waseda International
Symposium on Phase Conjugation and Wave Mixing and PR’97 594-596.
5. Glass AM, Von der Linde D, and O’Conner B, 1994. Appl.Phys.Lett.
65: 1079.
doi:10.1063/1.112131
http://dx.doi.org/10.1063/1.112131
6. Buse K, 1997. Appl.Phys. B. 64: 273-291.
doi:10.1007/s003400050175
http://dx.doi.org/10.1007/s003400050175
7. Buse K, Breer S, Peithmann K, Kapphan S, Gao M, Kratzig E, 1997.
Phys.Rev.B 56: 1225-1235.
doi:10.1103/PhysRevB.56.1225
http://dx.doi.org/10.1103/PhysRevB.56.1225
8. Breer S, Buse K, 1998. Appl.Phys.B. 66: 339-345.
doi:10.1007/s003400050398
http://dx.doi.org/10.1007/s003400050398