Generation and confinement of gas-plasma in photonic dielectric microstructure

Abstract : We report on a self-guided microwave surface-wave induced generation of ~60 μm diameter and 6 cm-long column of argon-plasma confined in the core of a hollow-core photonic crystal fiber. At gas pressure of 1 mbar, the micro-confined plasma exhibits a stable transverse profile with a maximum gas-temperature as high as 1300 ± 200 K, and a wall-temperature as low as 500 K, and an electron density level of 1014 cm−3. The fiber guided fluorescence emission presents strong Ar+ spectral lines in the visible and near UV. Theory shows that the observed combination of relatively low wall-temperature and high ionisation rate in this strongly confined configuration is due to an unprecedentedly wide electrostatic space-charge field and the subsequent ion acceleration dominance in the plasma-to-gas power transfer.
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https://hal-unilim.archives-ouvertes.fr/hal-00923892
Contributeur : Frédéric Gerome <>
Soumis le : dimanche 5 janvier 2014 - 21:10:31
Dernière modification le : jeudi 11 janvier 2018 - 06:19:19

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  • HAL Id : hal-00923892, version 1

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Benoît Debord, Raphaël Jamier, Frédéric Gérôme, Olivier Leroy, Caroline Boisse-Laporte, et al.. Generation and confinement of gas-plasma in photonic dielectric microstructure. Optics Express, Optical Society of America, 2013, 21 (21), pp.25509. ⟨hal-00923892⟩

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