用于红外光谱滤波的InSb磁光特性
Magneto-Optical Properties of InSb for Infrared Spectral Filtering
摘要：
我们目前的测量法拉第效应的n型InSb。在$λ$ = 8 $μ$ m - 12 $μ$ m长波红外区域中，确定了$10^{17}$ $\text{cm}^{-3}$附近载流子浓度范围的费尔德系数。测量吸收系数并计算每个样品的品质因数。从这些测量中，我们计算了载流子的有效质量，并说明了品质因数随波长的变化。通过法拉第旋转创建一个可调带通滤波器的方法进行了讨论，从原型设备的初步结果。
英文摘要：
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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