Optical Constants of rare-Earth Substituted Ferrite-Type Amorphous Garnets and Nanoscale Garnet-Oxide Layers

Mohammad Nur-E-Alam; Mikhail Vasiliev; Kamal Alameh

doi:10.20944/preprints201902.0250.v1

Preprint Article Version 1 This version is not peer-reviewed

Optical Constants of rare-Earth Substituted Ferrite-Type Amorphous Garnets and Nanoscale Garnet-Oxide Layers

Mohammad Nur-E-Alam ^* ,

Mikhail Vasiliev ,

Kamal Alameh

Version 1 : Received: 26 February 2019 / Approved: 27 February 2019 / Online: 27 February 2019 (09:09:58 CET)

How to cite: Nur-E-Alam, M.; Vasiliev, M.; Alameh, K. Optical Constants of rare-Earth Substituted Ferrite-Type Amorphous Garnets and Nanoscale Garnet-Oxide Layers. Preprints 2019, 2019020250 (doi: 10.20944/preprints201902.0250.v1). Nur-E-Alam, M.; Vasiliev, M.; Alameh, K. Optical Constants of rare-Earth Substituted Ferrite-Type Amorphous Garnets and Nanoscale Garnet-Oxide Layers. Preprints 2019, 2019020250 (doi: 10.20944/preprints201902.0250.v1).

Abstract

Amorphous ferrite-type rare-earth (RE) substituted garnets and garnet-oxide nanocomposite layers are prepared on clear glass substrates by using RF magnetron sputter-deposition process. By using a combination approach employing custom-built spectrum-fitting software in conjunction with Swanepoel’s envelope method, the spectral dispersion function of optical constants and the layer thicknesses are derived accurately from the transmission spectra of the as-deposited samples. The effects of excess metal-oxides added to the base material systems during the co-deposition process are found to affect the refractive index and the optical absorption coefficients of garnet-oxide composites. A number of optical constant datasets are presented, enabling the experimentalists to design nanophotonic or integrated-optics devices employing these functional materials.

Subject Areas

rare-earth garnets; optical constants; envelope method; nano-composites; magneto-optics

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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