Iron Garnet Films For Optical Isolators In Wavelength Range 800-1300 nm

Valerij I. Chani

doi:10.1117/12.961362

8 January 1990 Iron Garnet Films For Optical Isolators In Wavelength Range 800-1300 nm

Valerij I. Chani

Proceedings Volume 1125, Thin Films in Optics; (1990) https://doi.org/10.1117/12.961362
Event: 1989 International Congress on Optical Science and Engineering, 1989, Paris, France

Abstract

The LPE growth technique was used to prepare the thick films of Bi-substituted iron garnets for optical isolators. Phase diagrams of the complex flux systems were investigated. It was shown that in systems with rare-earth oxides concentration less than 0,5 mol. % stabilization of the growth rate takes place. According to our investigations Y, Ho and Dy have more "equilibrium" cation radii for dodechahedral sublattice of garnet structure. That is why we selected (lin,B1)3(Fe,Ga)5O12 garnet film compositions with Ln = Y, Ho and Dy for the preparation of more perfect layers. The duration of LPE processes was in the range 2,5 to 12 hours. Bi content in the prepared films was 1,5-2,0 atoms per formula unit. The uncracked samples with 0,2-0,4 mm sum thickness observed the Faraday rotation of more than 45° at the wavelength range 800-1300 mm. The absorption spectra for high level of Bi substitution and different Ln were also investigated.

Citation Download Citation

Valerij I. Chani "Iron Garnet Films For Optical Isolators In Wavelength Range 800-1300 nm", Proc. SPIE 1125, Thin Films in Optics, (8 January 1990); https://doi.org/10.1117/12.961362

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