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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 20 — Sep. 26, 2011
  • pp: 19384–19398

Pixelated source mask optimization for process robustness in optical lithography

Ningning Jia and Edmund Y. Lam  »View Author Affiliations

Optics Express, Vol. 19, Issue 20, pp. 19384-19398 (2011)

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Optical lithography has enabled the printing of progressively smaller circuit patterns over the years. However, as the feature size shrinks, the lithographic process variation becomes more pronounced. Source-mask optimization (SMO) is a current technology allowing a co-design of the source and the mask for higher resolution imaging. In this paper, we develop a pixelated SMO using inverse imaging, and incorporate the statistical variations explicitly in an optimization framework. Simulation results demonstrate its efficacy in process robustness enhancement.

© 2011 OSA

OCIS Codes
(110.3960) Imaging systems : Microlithography
(110.5220) Imaging systems : Photolithography
(110.1758) Imaging systems : Computational imaging

ToC Category:
Imaging Systems

Original Manuscript: June 8, 2011
Revised Manuscript: August 26, 2011
Manuscript Accepted: August 30, 2011
Published: September 22, 2011

Ningning Jia and Edmund Y. Lam, "Pixelated source mask optimization for process robustness in optical lithography," Opt. Express 19, 19384-19398 (2011)

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