Tesla coil discharges guided by femtosecond laser filaments in air
نویسندگان
چکیده
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منابع مشابه
Triggering and Guiding of High-voltage Tesla Coil Discharges by Femtosecond Laser-induced Plasma Filaments in Air
We report experimental guiding of high-voltage (HV) sparks discharges in air with plasma filaments generated by a terawatt femtosecond laser. Large sparks discharges are shoot up from a HV electrode fixed at the top of a Tesla coil voltage elevator to a farther grounded one. Ultrashort laser pulsed beams of energy on the order of the mJ through open air exhibit non-linear propagation effects. I...
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The guiding of meter scale electric discharges produced in air by a Tesla coil is realized in laboratory using a focused terawatt laser pulse undergoing filamentation. The influence of the focus position, the laser arrival time or the gap length is studied to determine the best conditions for efficient laser guiding. Discharge parameters such as delay, jitter and resistance are characterized. A...
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Recent works on plasma channels produced during the propagation of ultrashort and intense laser pulses in air demonstrated the guiding of electric discharges along the laser path. However, the short plasma lifetime limits the length of the laser-guided discharge. In this paper, the conductivity and lifetime of long plasma channels produced by ultrashort laser pulses is enhanced efficiently over...
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We have demonstrated the ability to trigger and guide high-voltage discharges with ionized filaments generated by femtosecond terawatt laser pulses. The plasma filaments extended over the whole gap, providing a direct ohmic connection between the electrodes. Laser-guided straight discharges have been observed for gaps of as much as 3.8 m at a high voltage reduced to 68% of the natural breakdown...
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The triggering and guiding of the stationary high voltage (HV) discharges at 5-40 kV are demonstrated by using plasma filaments generated by single and dual femtosecond(fs) laser pulses in air. A significant reduction of the breakdown voltage threshold due to the pre-ionization of the air gap by laser pulse filamentaion was observed. The amount of free electrons of filaments generated by differ...
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