Note: a high transmission Faraday optical isolator in the 9.2 μm range

Laurent Hilico; Albane Douillet; Jean-Philippe Karr; Eric Tournié

doi:10.1063/1.3640004

Note: a high transmission Faraday optical isolator in the 9.2 μm range

Rev Sci Instrum. 2011 Sep;82(9):096106. doi: 10.1063/1.3640004.

Authors

Laurent Hilico¹, Albane Douillet, Jean-Philippe Karr, Eric Tournié

Affiliation

¹ Département de Physique, Université d'Evry Val d'Essonne, Bd. F. Mitterrand, 91025 Evry, France. hilico@spectro.jussieu.fr

PMID: 21974633
DOI: 10.1063/1.3640004

Abstract

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).