Detection of CO₂ laser radiation in a ferrite

The detection of plane polarized, amplitude modulated radiation of CO₂ laser (λ ∼ 10 µm) in a transparent ferrite at room temperature is experimentally performed. It is shown that the detected signal is observed when the magnetization of the ferrite reaches the saturation value. The dependence of detected signal parameters on the external magnetic field is well correlated with the magnetization curve of the ferrite sample. (paper)