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Manufacture and characterization of optical coatings with incorporated copper island films

By Mario Held, Olaf Stenzel, Steffen Wilbrandt, Norbert Kaiser and Andreas Tünnermann


Copper island films have been prepared by thermal evaporation in vacuum and characterized by in situ as well as ex situ spectrophotometry. The parallel investigation of the island morphology by means of transmission electron microscopy allowed us to establish a clear correlation between film structure and optical properties. The effective optical constants of the copper island films could be determined by means of a fit of their ex situ transmission and reflection spectra. The effective optical constants have been used for designing and preparing optical multilayer coatings applicable for attenuator or color filter specifications. Measured characteristics of the multilayer coatings are in very good agreement with the calculated spectra

Year: 2012
DOI identifier: 10.1364/AO.51.004436
OAI identifier:
Provided by: Fraunhofer-ePrints
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