Terahertz Radiation from a Longitudinal Electric Field Biased Femtosecond Filament in Air
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DOI: 10.1088/0256-307x/37/6/065201
Abstract: The Terahertz (THz) temporal waveform and spectrum from a longitudinal electrically biased femtosecond filament is studied experimentally. The initial direction of the electron motion inside the unbiased filament plasma is deduced from the transformation of… read more here.
Keywords: femtosecond filament; field; air; biased femtosecond ... See more keywords
Discrimination of bimetallic alloy targets using femtosecond filament-induced breakdown spectroscopy in standoff mode.
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DOI: 10.1364/ol.43.003465
Abstract: The femtosecond filament-induced breakdown spectroscopy (FIBS) technique coupled with principal component analysis (PCA) is demonstrated for standoff (ST) analysis of metals, alloys (Al, Cu, brass, stainless steel), and bimetallic strips (Ag@Cu, Ag@Au with varying weight… read more here.
Keywords: femtosecond filament; breakdown spectroscopy; induced breakdown; spectroscopy ... See more keywords
Controlling femtosecond filament propagation using externally driven gas motion.
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DOI: 10.1364/ol.44.000199
Abstract: The thermal density depression (or "density hole") produced by a high-repetition-rate femtosecond filament in air acts as a negative lens, altering the propagation of the filament. We demonstrate the effects of externally driven gas motion… read more here.
Keywords: gas; filament propagation; density; filament ... See more keywords