Characteristics of gas breakdown in hollow-core fibers

X. Shi, X. B. Wang, Wei Jin, M. S. Demokan

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review


We succeeded in obtaining gas discharge in 250, 150, and 50μm bore-diameter hollow-core fibers by using longitudinal DC excitation. Stable glow discharges of at least several minutes were observed for these hollow-core fibers, and a flash glow was also observed for a hollow-core capillary with a diameter of ∼20μm. Breakdown of helium and argon gases in a 26.2cm-length 250μm-inner-diameter hollow-core fiber was achieved with a voltage of less than 30kV. Breakdown voltages of helium and argon gases were measured for various bore-sizes, fiber-lengths, and a pressure range of from below 1 to 50 Torr. Experimental results deviated from previous theoretical models and further theoretical and experimental investigations are needed to understand the unique characteristics of gas-discharge in miniature capillaries with bore-diameter below 250μm.
Original languageEnglish
Title of host publication19th International Conference on Optical Fibre Sensors
Publication statusPublished - 26 Jun 2008
Event19th International Conference on Optical Fibre Sensors - Perth, WA, Australia
Duration: 15 Apr 200818 Apr 2008


Conference19th International Conference on Optical Fibre Sensors
CityPerth, WA


  • Capillary
  • Fiber laser
  • Gas breakdown
  • Gas laser
  • Glow discharge
  • Hollow-core fiber
  • Photonic bandgap fiber

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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