LONG-LIVED CHANGES OF OPTICAL ABSORPTION COEFFICIENT AND REFRACTIVE INDEX IN THE GARNET NaCa2Mn2V3O12 UNDER ILLUMINATION

S.L. Gnatchenko; V.A. Bedarev; V.V. Eremenko; V.I. Gapon; I.S. Kachur; M.B. Kosmyna; B.P. Nazarenko; V.G. Piryatinskaya; V.M. Puzikov

doi:10.1364/APMED.1999.MC21

Advances in Photorefractive Materials, Effects and Devices
Trends in Optics and Photonics (Optica Publishing Group, 1999),
paper MC21
•https://doi.org/10.1364/APMED.1999.MC21

LONG-LIVED CHANGES OF OPTICAL ABSORPTION COEFFICIENT AND REFRACTIVE INDEX IN THE GARNET NaCa₂Mn₂V₃O₁₂ UNDER ILLUMINATION

S.L. Gnatchenko, V.A. Bedarev, V.V. Eremenko, V.I. Gapon, I.S. Kachur, M.B. Kosmyna, B.P. Nazarenko, V.G. Piryatinskaya, and V.M. Puzikov

Advances in Photorefractive Materials, Effects and Devices 1999

Elsinore Denmark
ISBN: 1-55752-606-0

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S. L. Gnatchenko, V. A. Bedarev, V. V. Eremenko, V. I. Gapon, I. S. Kachur, M. B. Kosmyna, B. P. Nazarenko, V. G. Piryatinskaya, and V. M. Puzikov, "LONG-LIVED CHANGES OF OPTICAL ABSORPTION COEFFICIENT AND REFRACTIVE INDEX IN THE GARNET NaCa2Mn2V3O12 UNDER ILLUMINATION," in Advances in Photorefractive Materials, Effects and Devices, P. Andersen, P. Johansen, H. Pedersen, P. Petersen, and M. Saffman, eds., Vol. 27 of Trends in Optics and Photonics (Optica Publishing Group, 1999), paper MC21.

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Abstract

Photoinduced optical absorption and linear birefringence have been found in the garnet NaCa₂Mn₂V₃O₁₂ under illumination by He-Ne laser (λ = 633 nm). The effects are observed in the temperature range T < 130 K, persist a long time at low temperatures and reach the values ∆K ≈ 25cm⁻¹ and ∆n ≈ 1.6•10⁻⁴.

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