Fig. 1. Block diagram of composition of high-power and wide-band laser beam divergence angle test system

Fig. 2. Measuring principle diagram of high-power and wide-band laser beam divergence angle test system

Fig. 3. Schematic diagram of measuring laser beam divergence angle by scanning slit method

Fig. 4. Schematic diagram of scanning measurement scheme of rotary roller type biorthogonal four slit

Fig. 5. Diagram of test results

Fig. 6. Schematic diagram of calibration for laser beam divergence angle