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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 11,
  • Issue 7,
  • pp. 071201-
  • (2013)

Determining polymer film thickness during manufacturing with broadband transmission

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Abstract

A novel broadband transmission method to determine polymer film thickness during manufacturing is proposed, and a measurement system is developed based on this method. The relationship between broadband optical power and film thickness is deduced according to the Lambert-Beer law. The system is composed of a halogen light and an optical power meter. Results show that the measurement error of this method is approximately 1 \mm m, and the resolution of the system is below 0.4 <i>μ</i>m for polymer films with less than 100-<i>μ</i>m thickness.

© 2013 Chinese Optics Letters

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