Patent ID: 7106425

Claim:
A system configured to determine at least two properties of a specimen during use, comprising: a stage configured to support the specimen during use; a measurement device coupled to the stage, comprising: an illumination system configured to direct energy toward a front side and a back side of the specimen simultaneously during use; and a detection system coupled to the illumination system and configured to detect energy propagating from the front side and the back side of the specimen simultaneously during use, wherein the measurement device is configured to generate one or more output signals in response to the detected energy during use; and a processor coupled to the measurement device and configured to determine a first property and a second property of the specimen from the one or more output signals during use, wherein the specimen is a product wafer, wherein the first property comprises a presence of defects on the specimen, wherein the defects comprise micro defects on the front side of the specimen and macro defects on the back side of the specimen, and wherein the second property comprises a thin film characteristic of the specimen.