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We present chalcogenide glass As2Se3 capillaries as efficient waveguides inthe mid-IR and THz spectral ranges. The capillaries are fabricated using adouble crucible glass drawing technique. The wall thickness of the glasscapillary is properly designed and controlled during drawing, and we are ableto produce capillaries with different wall thickness, starting from 12 \mum andup to 130 \mum. Such capillaries show low loss properties in the whole targetwavelength region. In the mid-IR range guidance is governed by Fresnelreflection and antiguidance mechanisms (ARROWs), while in the THz spectralrange thin walls capillaries guide via total internal reflection.

Thin chalcogenide capillaries as efficient waveguides in the mid-IR - THz spectral range