We have fabricated and characterized an n-doped InSb Faraday isolator in the mid-IR range (9.2 μm). A high isolation ratio (31(2) dB) and low insertion loss (1.9(3) dB) are obtained. Temperature dependance is analyzed. Further possible improvements are discussed, including the realization of a two-stage isolator. A similar design can be used to cover a wide wavelength range (λ ∼ 7.5 − 30 μm).
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Brief Report| September 26 2011
Note: A high transmission Faraday optical isolator in the 9.2 μm range
Laurent Hilico, Albane Douillet, Jean-Philippe Karr, Eric Tournié; Note: A high transmission Faraday optical isolator in the 9.2 μm range. Rev. Sci. Instrum. 1 September 2011; 82 (9): 096106. https://doi.org/10.1063/1.3640004
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