Patent ID: 11961700
Assignee: ASML NETHERLANDS B.V.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 14:
15. A system for multi-beam scanning, comprising:
a detector including circuitry for detecting signal information representative of first and second images, wherein the first image is associated with a first beam of a set of beams and the second image is associated with a second beam of the set of beams;
a controller with at least one processor and a non-transitory computer readable medium comprising instructions that, when executed by the processor, cause the controller to:
perform a frequency analysis of the signal information;
detect, based on the frequency analysis, disturbances in positioning of the first and second beams in relation to a sample;
obtain an image of the sample using the signal information of the first and second beams; and
correct the image of the sample using the identified disturbances.