Broadband coherent mid-IR supercontinuum generation using highly nonlinear tapered photonic crystal fibers

Abstract

We design tellurite and As2S3-based chalcogenide tapered photonic crystal fibers (TPCF) for broadband mid-infrared coherent supercontinuum (SC) generation in the few optical-cycle-regime. By injecting pre-chirped femtosecond pulses, the soliton self-compression is optimized and then, we show the generation of more than one octave-spanning SC spectra with low input pulse energies in both TPCF having 8 mm-length.