Mid-infrared monocrystalline interference coatings with excess optical loss below 10 ppm

G. Winkler, L. W. Perner, G. -W. Truong +13

We present high-reflectivity substrate-transferred single-crystal GaAs/AlGaAs interference coatings at a center wavelength of 4.54 um with record-low excess optical loss below 10 p…