The invention discloses a
laser targeting
local irradiation flux mapping method and device based on
phase plate positioning, belongs to the field of
laser targeting experiments, and aims to solve the problem that in existing optical element damage
test analysis, flux data only takes average flux as a result, and
target surface beam flux cannot correspond to damage points. The method comprises a calibration step for obtaining an affine
transformation matrix and a step for carrying out a
laser targeting experiment to obtain
local irradiation flux of a target material, a
phase plate is inserted between a lens of a targeting experiment light path and the target material, array damage points are formed on the rear surface of the target material, the affine
transformation matrix is constructed, the
phase plate is removed, and the target material
local irradiation flux is obtained. Performing a laser targeting experiment by using the original experiment light path; mapping the target shooting laser beam near-field image to the target material damage image according to the affine
transformation matrix, and superposing the target shooting laser beam near-field image and the target material damage image to obtain the position of the phase mark point corresponding to the target material damage point; and obtaining the local
irradiation flux of laser targeting at the position of each damage point on the target material.