Broadband mid-infrared supercontinuum generation in chalcogenide tapered fiber with all-normal dispersion

摘要

We report broadband supercontinuum (SC) generation in chalcogenide (ChG) tapered fibers pumped in the normaldispersion (ANDi) regime. The fibers were fabricated using the isolated stacked extrusion method. A homemade taperingplatform allows us to accurately control tapering parameters. An SC generation spanning 1.4 - 7.2 μm was achieved bypumping an As_2S_3tapered fiber. To further extend the SC, a Te-based ChG tapered fiber was pumped at 5.5 μm, and anSC generation covered 1.7–12.7 μm with high coherence property was generated.