Magneto-Optical Properties of InSb for Spectral Filtering in the Far-Infrared (original) (raw)

Abstract

We present measurements of the Faraday effect in n-type InSb. The Verdet coefficient was determined for a range of carrier concentrations near 101710^{17}1017 cm−3cm^{-3}cm−3 in the lambda\lambdalambda = 8 mu\mumum - 12 mu\mumum far-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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