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Amotchkina, Tatiana; Trubetskov, Michael; Habel, Florian; Pervak, Yuri J.; Zhang, Jinwei; Mak, KaFai; Pronin, Oleg; Krausz, Ferenc; Pervak, Vladimir (2017): Synthesis, fabrication and characterization of a highly-dispersive mirrors for the 2 mu m spectral range. In: Optics Express, Vol. 25, No. 9: pp. 10234-10240
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We report a challenging design, fabrication and post-production characterization problem of a dispersive mirror supporting the spectral range from 2000 nm to 2200 nm and providing a group delay dispersion of -1000 fs(2). The absolute reflectance in the working range is over 99.95%. The reported mirror is a critical element for Tm and Ho based lasers and paves the way for the development of ultrafast 2 mu m lasers with sub-100 fs pulse duration. (C) 2017 Optical Society of America