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arXiv · 2008.08235

Magneto-Optical Properties of InSb for Infrared Spectral Filtering

Nolan Peard·Dennis Callahan·Joy C. Perkinson·Qingyang Du·Neil S. Patel·Takian Fakhrul·John LeBlanc·Caroline A. Ross·Juejun Hu·Christine Y. Wang
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Abstract

We present measurements of the Faraday effect in n-type InSb. The Verdet coefficient was determined for a range of carrier concentrations near $10^{17}$ $\text{cm}^{-3}$ in the $λ$ = 8 $μ$m - 12 $μ$m long-wave infrared regime. The absorption coefficient was measured and a figure of merit calculated for each sample. From these measurements, we calculated the carrier effective mass and illustrate the variation of the figure of merit with wavelength. A method for creating a tunable bandpass filter via the Faraday rotation is discussed along with preliminary results from a prototype device.

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Nolan Peard, Dennis Callahan, Joy C. Perkinson, Qingyang Du, Neil S. Patel, Takian Fakhrul, John LeBlanc, Caroline A. Ross, Juejun Hu, Christine Y. Wang. 2020-11-28. Magneto-Optical Properties of InSb for Infrared Spectral Filtering. https://doi.org/10.1063/5.0048836

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