Multispectral co-phase error detection method based on pupil space modulation
A technology of spatial modulation and detection method, applied in optical instrument testing, machine/structural component testing, measuring devices, etc., can solve the problems affecting the final imaging quality of the system, the complexity of common-phase error detection, etc., and achieve fast modulation speed, Improve real-time performance, remove the effect of 2π blur
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[0038] The scheme of the present invention will be further described below in conjunction with the accompanying drawings and specific implementation steps.
[0039] Such as figure 1 As shown in the flowchart of , the multispectral co-phase error detection method based on pupil space modulation includes the following steps:
[0040] Step 1 Construction of the optical path:
[0041] First, set up on the experimental platform such as figure 2The experimental optical path shown; the broadband light exits from the laser and enters the multi-pupil optical path system through the beam expander system. Take one pupil at the edge as the reference optical path, and the remaining pupils as the adjustment optical path; let the two parts of the optical path pass through the beam reduction system respectively; then the light of the adjusted optical path passes through two flat mirrors that are parallel but at 45° counterclockwise with the propagating light, Adjust its spatial position s...
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