Spectral-temporal composition matters when cascading supercontinua into the mid-infrared

Christian Rosenberg Petersen, Peter M. Moselund, Christian Petersen, Uffe Visbech Møller, Ole Bang

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Abstract

Supercontinuum generation in chalcogenide fibers is a promising technology for broadband spatially coherent sources in the mid-infrared, but it suffers from discouraging commercial prospects, mainly due to a lack of suitable pump lasers. Here, a promising approach is experimentally demonstrated using an amplified 1.55 mu m diode laser to generate a pump continuum up to 4.4 mu m in cascaded silica and fluoride fibers. We present experimental evidence and numerical simulations confirming that the spectral-temporal composition of the pump continuum is critical for continued broadening in a chalcogenide fiber. The fundamental physical question is concerned with the long-wavelength components of the pump spectrum, which may consist of either solitons or dispersive waves. In demonstrating this we present a commercially viable fiber-cascading configuration to generate a mid-infrared supercontinuum up to 7 mu m in commercial chalcogenide fibers.
Original languageEnglish
JournalOptics Express
Volume24
Issue number2
Pages (from-to)749-758
ISSN1094-4087
DOIs
Publication statusPublished - 2016

Keywords

  • OPTICS
  • PHOTONIC CRYSTAL FIBERS
  • 4.5 MU-M
  • CHALCOGENIDE FIBER
  • ZBLAN FIBER
  • GENERATION
  • POWER
  • PERSPECTIVES
  • AMPLIFIER
  • REGION
  • LASER

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