title: Mid-infrared supercontinuum generation spanning 1.8 octaves using step-index indium fluoride fiber pumped by a femtosecond fiber laser near 2 µm.
abstract: A nearly two-octave wide coherent mid-infrared supercontinuum is demonstrated in a dispersion-engineered step-index indium fluoride fiber pumped near 2 µm. The pump source is an all-fiber femtosecond laser with 100 fs pulse width, 570 mW average power and 50 MHz repetition rate. The supercontinuum spectrum spans from 1.25 µm to 4.6 µm. Numerical modelling of the supercontinuum spectra show good agreement with the measurements. The coherence of the supercontinuum is calculated using a numerical model and shows a high degree of coherence across the generated bandwidth allowing it to be used for frequency comb applications.
authors.forename: Reza
authors.initials: R
authors.lastname: Salem
authors.forename: Zack
authors.initials: Z
authors.lastname: Jiang
authors.forename: Dongfeng
authors.initials: D
authors.lastname: Liu
authors.forename: Robert
authors.initials: R
authors.lastname: Pafchek
authors.forename: David
authors.initials: D
authors.lastname: Gardner
authors.forename: Paul
authors.initials: P
authors.lastname: Foy
authors.forename: Mohammed
authors.initials: M
authors.lastname: Saad
authors.forename: Doug
authors.initials: D
authors.lastname: Jenkins
authors.forename: Alex
authors.initials: A
authors.lastname: Cable
authors.forename: Peter
authors.initials: P
authors.lastname: Fendel