U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PUBLICATIONS

New Optical Metrology at NIST for Semiconductor Lithography

Published

Author(s)

Ulf Griesmann, Tony L. Schmitz, Johannes A. Soons

Abstract

Optical semiconductor lithography in the deep ultraviolet (DUV) and next generation lithographies such as extreme ultraviolet lithography (EUVL) create many new challenges for surface figure metrology.  We discuss the needs for flatness metrology of silicon wafers and photomask blanks and how NIST is addressing these needs with two new optical testing interferometers, the NIST infrared interferometer (IR2) for measuring silicon wafers.  The other is the XCALIBIR interferometer for the testing of flat, spherical, and aspheric optics.
Conference Dates
April 17-18, 2002
Conference Location
Raleigh, NC
Conference Title
ASPE Conference - Progress in Precision
Pub Type
Conferences

Keywords

deep ultraviolet (DUV), Optical semiconductor lithography
Dimensional metrology

Citation

Griesmann, U. , Schmitz, T. and Soons, J. (2002), New Optical Metrology at NIST for Semiconductor Lithography, ASPE Conference - Progress in Precision, Raleigh, NC (Accessed September 29, 2023)

Created April 17, 2002, Updated February 19, 2017