Spectroscopic study on the behaviors of the Laser-Induced Air Plasma
2010
An experimental set-up for the spectroscopic study of Laser-Induced Air Plasma (LIAP) was built. The temporal evolvement, energy density and radiation intensity spatial distribution of emitted light at 1064 nm of laser plasma were respectively detected. It presents a relatively clear physical image of LIAP. The measurement result demonstrates that there is a comparatively strong radiation spectrum at 1064 nm, and the half-wave bandwidth is 40 ns. According to the computational method for diffuse reflection energy density, the radiation energy density at 1064 nm of laser plasma is 0.3 mJ/m 2 .
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