Study on Universal Standard for Evaluating High Energy Beam Quality

Development of measurement technology for high energy laser beam quality β factor

“…Laser in the history of development, in view of the beam quality evaluation method, many scholars have conducted in-depth study of domestic and international academia, and proposed a variety of ways to evaluate laser beam quality, the far-field divergence Angle and focus spot size, for example, multiple diffraction limited beta, Strehl Ratio and turbine energy than BQ, M2 factor and so on. However, for a long time, because the evaluation methods of beam quality are closely related to its application purpose, the evaluation standard of beam quality has not been a unified concept [1][2][3] .…”

Spot Invalid Point Repair Algorithm of Detector Array Measurement System Based on Image Correlation Coefficient

“…By obtaining these parameters, on the one hand, the experimental data can be used to carry out the study of the laser atmospheric transmission effect; on the other hand, analysis of the laser far-field spot parameters can be used to evaluate the performance parameters of the laser launching system. The detector array method is more and more widely used in laser parameter measurement technology because of its direct measurement of the spot, wide dynamic range of the detector, high system sampling frequency, and good real-time performance, and can be applied to various test environment requirements [4][5][6]. The hardware architecture is shown in Figure 1.…”