Optical mode analysis with design-based care areas

摘要

Methods and systems for selecting one or more modes of an inspection subsystem or system for inspection of a specimen are provided. The systems described herein are configured to acquire output for all of the modes to be considered at a location of a known defect on the specimen by aligning output, which is generated at the location with a mode known to generate output in which patterned features on the specimen are resolved to a degree that allows the output to be aligned to design data, with the design data for the specimen to identify the location with substantially high accuracy and then without moving the field of view of the inspection subsystem or system from that location, acquiring the output for all other modes. All of the acquired output can then be used to select mode(s) for inspection of the specimen or another specimen of the same type.