20 April 1987 Optical Inspection Tool For Disk Substrates
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Proceedings Volume 0749, Metrology: Figure and Finish; (1987); doi: 10.1117/12.939835
Event: OE LASE'87 and EO Imaging Symposium, 1987, Los Angeles, CA, United States
Abstract
One of the goals of the Substrate Process & Technology group at IBM in Rochester, Minnesota is to provide disk programs with consistently high quality substrates. A substrate inspection system that uses laser light has been designed, built, and is being used at Rochester. This paper explains the optics and detection scheme of the inspection tool called the Substrate Defect Detector (SDD). The SDD has been useful in studies to improve disk quality and to solve substrate problems in both manufacturing and development environments. Some results of the studies are reported and explained. Several examples of how the inspection system has been used to help solve substrate manufacturing process problems are discussed. The design objectives, operation, and use of the SDD are explained.
© (1987) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Scott J. Sherratt, "Optical Inspection Tool For Disk Substrates", Proc. SPIE 0749, Metrology: Figure and Finish, (20 April 1987); doi: 10.1117/12.939835; https://doi.org/10.1117/12.939835
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KEYWORDS
Amplifiers

Inspection

Sensors

Microscopes

Diodes

Objectives

PIN photodiodes

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