We present the laboratory characterisation of the first working, mid-infrared, integrated optics, 4-channel interferometric beam combiner based on the properties of two-dimensional arrays of evanescently coupled waveguides. Potential applications of the component to astronomy, biology and quantum optics are proposed and discussed.
Romina Diener, Jan Tepper, Stefan Nolte, Lucas Labadie, and Stefano Minardi, "Four-channel interferometry with a zig-zag array of mid-infrared integrated waveguides," Proc. SPIE 10106, Integrated Optics: Devices, Materials, and Technologies XXI, 101061D (Presented at SPIE OPTO: February 02, 2017; Published: 16 February 2017); https://doi.org/10.1117/12.2250597.
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