Development and Characterization of a Dispersion-Encoded Method for Low-Coherence Interferometry

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Development and Characterization of a Dispersion-Encoded Method for Low-Coherence Interferometry is written by Christopher Taudt and published by Springer Nature. It's available with International Standard Book Number or ISBN identification 3658359269 (ISBN 10) and 9783658359263 (ISBN 13).

This Open Access book discusses an extension to low-coherence interferometry by dispersion-encoding. The approach is theoretically designed and implemented for applications such as surface profilometry, polymeric cross-linking estimation and the determination of thin-film layer thicknesses. During a characterization, it was shown that an axial measurement range of 79.91 μm with an axial resolution of 0.1 nm is achievable. Simultaneously, profiles of up to 1.5 mm in length were obtained in a scan-free manner. This marked a significant improvement in relation to the state-of-the-art in terms of dynamic range. Also, the axial and lateral measurement range were decoupled partially while functional parameters such as surface roughness were estimated. The characterization of the degree of polymeric cross-linking was performed as a function of the refractive index. It was acquired in a spatially-resolved manner with a resolution of 3.36 x 10-5. This was achieved by the development of a novel mathematical analysis approach.