Measurement of optical activity and Faraday effect in pure and doped sillenite crystals

Vladimir L. Tassev; Georgi L. Diankov; Marin Gospodinov

doi:10.1117/12.217012

18 August 1995 Measurement of optical activity and Faraday effect in pure and doped sillenite crystals

Vladimir L. Tassev, Georgi L. Diankov, Marin Gospodinov

Proceedings Volume 2529, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications; (1995) https://doi.org/10.1117/12.217012
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

The spectral dependencies of the optical rotatory power (ORP) and Verdet coefficient (V) of undoped Bi₁₂GeO₂₀ (BGO), Bi₁₂SiO₂₀ (BSO) and Bi₁₂TiO₂₀ (BTO), and doped with V, Fe and Cr BSO crystals are studied. It is established that Cr and Fe strongly change ORP and, respectively, V in BSO in a wide spectral range from 480 to 1180 nm. Thus an increasing of ORP by about 92.8% at 480 nm, 25.3% at 756 nm, and 5.2% at 1171 nm, is observed in BSO:Cr. The dopant Fe in BSO strongly increases the Verdet coefficient V in the whole studied range -- with about 80 -- 300%, as at the longwaves an anomalous considerable increasing of V is observed. On the contrary, Cr and Fe decrease V and ORP, respectively. Using a fiber-optic system, the local ORP and V are measured. Some differences in ORP and V are observed within and without the so-called `central core.' A good qualitative evaluation of the local impurities and dopants distributions within and without the core could be based on these differences.

Citation Download Citation

Vladimir L. Tassev, Georgi L. Diankov, and Marin Gospodinov "Measurement of optical activity and Faraday effect in pure and doped sillenite crystals", Proc. SPIE 2529, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications, (18 August 1995); https://doi.org/10.1117/12.217012

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