Measuring and modeling flare in optical lithography

Chris A. Mack

doi:10.1117/12.485539

26 June 2003 Measuring and modeling flare in optical lithography

Chris A. Mack

Proceedings Volume 5040, Optical Microlithography XVI; (2003) https://doi.org/10.1117/12.485539
Event: Microlithography 2003, 2003, Santa Clara, California, United States

Abstract

Flare, unwanted scattered light arriving at the wafer, is caused by anything that forces the light to travel in a “non-ray trace” direction. The amount of flare experienced by any given feature is a function of both the local environment around that feature (short range flare) and the total amount of energy going through the lens (long range flare). This paper discusses the various sources of flare and reviews the many techniques used to measure flare in lithographic imaging tools. Flare will described by a new “DC” or low frequency model based on a scattering mechanism that properly accounts for conservation of energy and which improves upon existing DC flare models.

Citation Download Citation

Chris A. Mack "Measuring and modeling flare in optical lithography", Proc. SPIE 5040, Optical Microlithography XVI, (26 June 2003); https://doi.org/10.1117/12.485539

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