Full path single-shot imaging of femtosecond pulse collapse in air turbulence
OPTICS LETTERS(2020)
Abstract
In a single shot, we measure the full propagation path, including the evolution to pulse collapse, of a high power femtosecond laser pulse propagating in air. Our technique enables examination of the effect of parameters that fluctuate on a shot-to-shot basis, such as pulse energy, pulse duration, and air turbulence-induced refractive index perturbations. We find that even in lab air over relatively short propagation distances, turbulence plays a significant role in determining the location of pulse collapse. (C) 2020 Optical Society of America
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Key words
femtosecond pulse collapse,turbulence,imaging,single-shot
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