High-power ultra-short laser real-time near field intensity distribution measuring device

The invention provides a high-power ultra-short laser real-time near field intensity distribution measuring device. An attenuating piece and a beam splitter are sequentially placed in the device in the incidence direction of high-power laser pulses. A micro-lens array, an optical fiber distributor, a delay optical fiber set, an optical fiber beam combiner, transmission optical fibers, a quick phototube and a high-speed oscilloscope are sequentially placed in the transmission direction of the beam splitter. An optical fiber clamping device and reference optical fibers are sequentially placed in the reflecting direction of the beam splitter. The delay optical fiber set and the reference optical fibers are connected to the optical fiber beam combiner to form single output, then the single output is projected to the quick phototube through the transmission optical fibers, electric pulse sequences are formed on the high-speed oscilloscope, and at last, a computer is used for conducting data processing. According to the high-power ultra-short laser real-time near field intensity distribution measuring device, the micro-lens array is used for conducting spatial splitting sampling and optical fiber beam combining time division multiplexing transmission, and various kinds of information such as incident laser beam real-time near field intensity distribution information and pulse time waveform information are obtained through the waveform splicing reconstruction technology. The high-power ultra-short laser real-time near field intensity distribution measuring device is low in cost, simple in structure and convenient to adjust.