Characteristics of gas breakdown in hollow-core fibers

X. Shi; X. B. Wang; W. Jin; M. S. Demokan

doi:10.1117/12.785973

16 May 2008 Characteristics of gas breakdown in hollow-core fibers

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

Proceedings Volume 7004, 19th International Conference on Optical Fibre Sensors; 70042E (2008) https://doi.org/10.1117/12.785973
Event: 19th International Conference on Optical Fibre Sensors, 2008, Perth, WA, Australia

Abstract

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.

Citation Download Citation

X. Shi, X. B. Wang, W. Jin, and M. S. Demokan "Characteristics of gas breakdown in hollow-core fibers", Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70042E (16 May 2008); https://doi.org/10.1117/12.785973

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