On the feasibility of using an atmospheric discharge plasma as an RF antenna

Dwyer, Timothy J.; Greig, J. R.; Murphy, D.P.; Perin, J. M.; Pechacek, R. E.; Raleigh, M.

doi:10.1109/tap.1984.1143275

Cited by 77 publications

(38 citation statements)

References 7 publications

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“…The weakly ionized plasma column and subsequent low density channel generated by laser filaments allow the precise triggering and guiding of electric discharges between two electrodes with a significant reduction of the breakdown voltage [7][8][9] . This effect is potentially useful for the development of laser lightning rod 4, 10-11 , high-voltage, high-current switches 12 , or virtual plasma antennas [13][14] .For applications such as plasma antennas, extension of the filament plasma lifetime is needed, since the plasma from the filament recombines in a few nanoseconds, seriously limiting the bandwidth of antennas to frequencies v> 10 9 Hz. This can be done using additional femtosecond or nanosecond laser pulses 15-17 but this technique is particularly complex and the resulting plasma is limited to a few µs.…”

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Prolongation of the lifetime of guided discharges triggered in atmospheric air by femtosecond laser filaments up to 130 μs

Arantchouk

Honnorat

Thouin

et al. 2016

Applied Physics Letters

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Abstract:The triggering and guiding of electric discharges produced in atmospheric air by a compact 100 kV Marx generator is realized in laboratory using an intense femtosecond laser pulse undergoing filamentation. We describe here an approach allowing extending the lifetime of the discharges by injecting a current with an additional circuit. Laser guiding discharges with a length of 8.5 cm and duration of 130 µs were obtained.In the last decade femtosecond laser filaments has proved to be a powerful tool to trigger and guide electric discharges in atmospheric air 1 with gap length of a few meters [2][3][4][5][6] . The weakly ionized plasma column and subsequent low density channel generated by laser filaments allow the precise triggering and guiding of electric discharges between two electrodes with a significant reduction of the breakdown voltage [7][8][9] . This effect is potentially useful for the development of laser lightning rod 4, 10-11 , high-voltage, high-current switches 12 , or virtual plasma antennas [13][14] .For applications such as plasma antennas, extension of the filament plasma lifetime is needed, since the plasma from the filament recombines in a few nanoseconds, seriously limiting the bandwidth of antennas to frequencies v> 10 9 Hz. This can be done using additional femtosecond or nanosecond laser pulses 15-17 but this technique is particularly complex and the resulting plasma is limited to a few µs. Injection of electric current through guided discharges appears to be a more promising way. The duration of the guided discharge mostly depends on the high voltage (HV) source, with a typical duration on the order of 100 ns [2][3][4]14 . In several publications, a Marx generator was used as the HV source to produce meter scale guided discharges. In this case, the discharge duration is defined by the product of the Marx "stack" capacitance C marx and a discharge load R load . In Ref. 18, a compact Marx generator was used to create a ~ 21 cm guided discharge of duration about 600 ns due to the mentioned Marx capacitance C max ~ 2 nF and the discharge load resistance R d ~ 300 Ω. In this letter we describe a method, which allows prolonging this parameter up to 130 µs. The experiment setup is presented in Fig. 1. The circuit is composed of two parts. The first part is a Marx generator described in 18. For this experiment the generator was composed of 5 stages charged up to 20 kV DC, resulting in 100 kV output pulse with a negative polarity. An inductance L 1 was connected to the generator output electrode and served as a load up to the moment when the Marx pulse produces a breakdown in the inter-electrode gap. The Marx output electrode has a cylinder form with an axial hole allowing the laser beam to enter in the generator and to trigger it. The second electrode is a round finger with a 5 mm radius. As described in Ref. 18, a chirped pulse amplified laser system emitting at a wavelength of 800 nm is used to produce the filaments between the two electrodes and inside the Marx generator. The laser pul...

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Prolongation of the lifetime of guided discharges triggered in atmospheric air by femtosecond laser filaments up to 130 μs

Arantchouk

Honnorat

Thouin

et al. 2016

Applied Physics Letters

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“…The dispersion relation of the plasma surface wave in plasma column is given by (1). is wave number in plasma, k 0 is wave number in the vacuum, and the k p is given by (2).…”

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“…A plasma antenna is researched and measured in [1], and radiation characteristics are similar to metal antenna when signal is transmitted and received. The structure parameters and current distribution of a plasma antenna are researched in [2][3][4], and radiation efficiency of the antenna is about 25%.…”

Section: Introductionmentioning

confidence: 99%

Analysis and design of plasma monopole antenna

Qiu

Lin

et al. 2011

2011 6th International ICST Conference on Communications and Networking in China (CHINACOM)

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Two kinds of plasma monopole antennas are simulated and analyzed in this paper. For different radius, reflection coefficient, radiation pattern and radiation efficiency of a cylindrical plasma monopole antenna are calculated respectively. According to actual situation, a conical plasma monopole antenna with different cone angle is simulated. Impedance and radiation characteristics of the plasma antenna are similar to the metal monopole antenna.

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“…Now, these periodically plasma structure is known as plasma photonic crystal (PPC), which is presented by Hojo and Mase [7]. The technologies applications of PPC are now expanding widely as, for example, in plasma lens [8], plasma antenna [9], plasma stealth aircraft [10][11][12][13], etc. And the reflectionless transmission due to the Fabry-Perot resonance in PPC can be applied to frequency filters [14] and interferometers [15].…”

Section: Introductionmentioning

confidence: 99%

Optical Properties of One-Dimensional Binary Plasma Dielectric Photonic Crystal

Guo¹,

Gao²

2011

IJAPM

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Abstract-The optical properties of electromagnetic (EM) waves propagating in one-dimensional plasma dielectric photonic crystal made of alternate thin layers of two materials namely micro plasma layer and dielectric material layer is studied theoretically. The dispersions both for ω < ω p and ω > ω p are deduced by transfer matrix method and the photonic band gap structure and the reflection spectra are computed. The results show that the band gap structure and reflection spectra are tuned correspondingly due to the dielectric constant of the microplasma layer modified differently in different frequency ranges. Parameter dependence of the effects is calculated and discussed.

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On the feasibility of using an atmospheric discharge plasma as an RF antenna

Cited by 77 publications

References 7 publications

Prolongation of the lifetime of guided discharges triggered in atmospheric air by femtosecond laser filaments up to 130 μs

Prolongation of the lifetime of guided discharges triggered in atmospheric air by femtosecond laser filaments up to 130 μs

Analysis and design of plasma monopole antenna

Optical Properties of One-Dimensional Binary Plasma Dielectric Photonic Crystal

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