A Method for Absolute Measurement of Power Distribution Curve in Laser Far Field Barrel
A distribution curve and absolute measurement technology, which is applied to the absolute measurement of the power distribution curve in the laser far-field barrel, and the measurement of the laser beam quality parameters. , to save the cost of data collection, simplify the calculation process, and ensure the effect of real-time
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[0036] Such as Figure 1-3 As shown, the absolute measurement device of the power distribution curve in the laser far-field barrel of the present invention includes a scanning disk 3, a photoelectric detection unit, a detection circuit and a casing (not shown in the figure) that rotate at a high speed around the central rotating shaft 5, and detects The circuit includes an inverter, an adder, a data acquisition unit and a processing unit; a set of sampling holes 2 arranged uniformly in involute line is arranged on the scanning disc 3, and the far-field laser beam 1 to be measured passes through the sampling holes 2 and enters the The photodetection unit on the other side of the disk 3 is scanned.
[0037] The photoelectric detection unit adopts the method of arranging a fast-response photodetector 8 behind the integrating sphere 6. This is because the working principle of the system determines that the real-time detection of the sampled light beam requires the use of a large-a...
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