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1. Reduction in thickness error of optical coatings by dividing thick layers and monitoring with multiple witness glasses.

Author

Zhu, Meiping, Yi, Kui, Du, Ying, Qi, Hongji, Zhang, Weili, and Shao, Jianda

Subjects
*OPTICAL coatings, *THICKNESS measurement, *WAVELENGTHS, *MEASUREMENT errors, *GLASS, *PHYSICS experiments
Abstract

Abstract: We present a monitoring strategy based on using two pieces of witness glass, which are brought to the measuring position in a specially chosen sequence, each witness glass is monitored by one single wavelength. To reduce the thickness error, some thick layers are divided into two layers and monitored by different witness glasses. Theoretical analysis and experimental results have demonstrated that the proposed monitoring strategy can achieve spectral performance close to the theoretical design. [Copyright &y& Elsevier]

Published
2013
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