Journal
OPTICS EXPRESS
Volume 19, Issue 20, Pages 19495-19507Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.19.019495
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Funding
- Deutsche Forschungsgemeinschaft within the Cluster of Excellence QUEST, Centre for Quantum Engineering and Space-Time Research
- National Science Foundation [PHY-1019071]
- Direct For Mathematical & Physical Scien
- Division Of Physics [1019071] Funding Source: National Science Foundation
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The spectral evolution of a high-intensity light channel formed by filamentation is investigated in a detailed experimental study. We also track the spatio-temporal dynamics by high-order harmonic generation along the filament. Both the spectral and temporal diagnostics are performed as a function of propagation distance, by extracting the light pulses directly from the hot filament core into vacuum via pinholes that terminate the nonlinear propagation. We compare the measured spectral shapes to simulations and analyze numerically the temporal dynamics inside the filament. (C) 2011 Optical Society of America
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