High-speed photography of the Q-Nd: YAG laser power density in spatiotemporal radiation structure

An high-speed photography of the Q-Nd: YAG laser power density based on temporal & spatial real measurement synchronously (TSRM) were reported, and the waveforms of spatiotemporal radiation structure for single-pulse in a series of laser pulse was recorded. The change of spatiotemporal power density distribution for rf-laser pulse was analyzed from comparing a list of waveforms. The methodology has a high damage threshold (≥ 4.5GW/cm2).