Patent ID: 11966169
Assignee: ASML HOLDING N.V.
Field: nan (nan)
Classification: CPC nan | IPC G  H

Claim 0:
1. A system comprising:
a radiation source;
first and second phased arrays comprising optical elements configured to radiate radiation waves;
a plurality of ports;
waveguides configured to guide radiation from a port of the plurality of ports to the optical elements; and
phase modulators configured to adjust phases of the radiation waves;
wherein one or both of the first and second phased arrays are respectively configured to form a first beam and/or a second beam of radiation directed toward a target structure based on the port coupled to the radiation source; and
a detector configured to receive radiation diffracted by the target structure and to generate a measurement signal based on the received radiation, wherein the measurement signal is indicative of an alignment characteristic or an overlay characteristic of the target structure.