Enhanced performance of a dielectric barrier discharge lamp using short-pulsed excitation

    Research output: Contribution to journalArticleResearchpeer-review

    Abstract

    We observe marked increases in the time-averaged intensity, peak intensity, efficiency and spectral purity of the VUV output from an Xe excimer barrier discharge lamp when using short-pulse (approximately 150 ns FWHM (full width half maximum)) excitation. Intensity increases with Xe pressure up to 600 Torr with a maximum output 2.6 times higher and an efficiency 3.2 times higher than the same lamp excited by conventional ac excitation (i.e. sinusoidal voltage waveform). The output occurs in regular short pulses (<300 ns FWHM) with a peak intensity more than six times the peak intensity typically obtained using ac. The spectral characteristics are similar to that observed using ac excitation except that the ratio of VUV to visible Xe* emission increases by a factor of three. The pulsed discharge appears diffuse (i.e. glow-like), even at the higher pressures at which the ac discharge is filamentary. It is concluded that the enhanced performance results largely from the ability for pulsed excitation to generate a discharge at near atmospheric pressures with a much lower electron density than that possible using ac.

    LanguageEnglish
    PagesL1–L6
    Number of pages6
    JournalJournal of Physics D: Applied Physics
    Volume34
    Issue number1
    DOIs
    Publication statusPublished - 7 Jan 2001

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    Discharge lamps
    luminaires
    Electric lamps
    Atmospheric pressure
    excitation
    Carrier concentration
    output
    Electric potential
    excimers
    pulses
    atmospheric pressure
    waveforms
    purity
    luminescence
    electric potential

    Cite this

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    title = "Enhanced performance of a dielectric barrier discharge lamp using short-pulsed excitation",
    abstract = "We observe marked increases in the time-averaged intensity, peak intensity, efficiency and spectral purity of the VUV output from an Xe excimer barrier discharge lamp when using short-pulse (approximately 150 ns FWHM (full width half maximum)) excitation. Intensity increases with Xe pressure up to 600 Torr with a maximum output 2.6 times higher and an efficiency 3.2 times higher than the same lamp excited by conventional ac excitation (i.e. sinusoidal voltage waveform). The output occurs in regular short pulses (<300 ns FWHM) with a peak intensity more than six times the peak intensity typically obtained using ac. The spectral characteristics are similar to that observed using ac excitation except that the ratio of VUV to visible Xe* emission increases by a factor of three. The pulsed discharge appears diffuse (i.e. glow-like), even at the higher pressures at which the ac discharge is filamentary. It is concluded that the enhanced performance results largely from the ability for pulsed excitation to generate a discharge at near atmospheric pressures with a much lower electron density than that possible using ac.",
    author = "Mildren, {R. P.} and Carman, {R. J.}",
    year = "2001",
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    language = "English",
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    Enhanced performance of a dielectric barrier discharge lamp using short-pulsed excitation. / Mildren, R. P.; Carman, R. J.

    In: Journal of Physics D: Applied Physics, Vol. 34, No. 1, 07.01.2001, p. L1–L6.

    Research output: Contribution to journalArticleResearchpeer-review

    TY - JOUR

    T1 - Enhanced performance of a dielectric barrier discharge lamp using short-pulsed excitation

    AU - Mildren, R. P.

    AU - Carman, R. J.

    PY - 2001/1/7

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    N2 - We observe marked increases in the time-averaged intensity, peak intensity, efficiency and spectral purity of the VUV output from an Xe excimer barrier discharge lamp when using short-pulse (approximately 150 ns FWHM (full width half maximum)) excitation. Intensity increases with Xe pressure up to 600 Torr with a maximum output 2.6 times higher and an efficiency 3.2 times higher than the same lamp excited by conventional ac excitation (i.e. sinusoidal voltage waveform). The output occurs in regular short pulses (<300 ns FWHM) with a peak intensity more than six times the peak intensity typically obtained using ac. The spectral characteristics are similar to that observed using ac excitation except that the ratio of VUV to visible Xe* emission increases by a factor of three. The pulsed discharge appears diffuse (i.e. glow-like), even at the higher pressures at which the ac discharge is filamentary. It is concluded that the enhanced performance results largely from the ability for pulsed excitation to generate a discharge at near atmospheric pressures with a much lower electron density than that possible using ac.

    AB - We observe marked increases in the time-averaged intensity, peak intensity, efficiency and spectral purity of the VUV output from an Xe excimer barrier discharge lamp when using short-pulse (approximately 150 ns FWHM (full width half maximum)) excitation. Intensity increases with Xe pressure up to 600 Torr with a maximum output 2.6 times higher and an efficiency 3.2 times higher than the same lamp excited by conventional ac excitation (i.e. sinusoidal voltage waveform). The output occurs in regular short pulses (<300 ns FWHM) with a peak intensity more than six times the peak intensity typically obtained using ac. The spectral characteristics are similar to that observed using ac excitation except that the ratio of VUV to visible Xe* emission increases by a factor of three. The pulsed discharge appears diffuse (i.e. glow-like), even at the higher pressures at which the ac discharge is filamentary. It is concluded that the enhanced performance results largely from the ability for pulsed excitation to generate a discharge at near atmospheric pressures with a much lower electron density than that possible using ac.

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