Ion beam sputtering coating ion beam sputtering deposition Laser Zentrum Hannover (LZH).
Research in cooperation with research institutes as well as independent further development are an important basis for permanent optimisation and improvement of our coating machines.
The participation of Cutting Edge Coatings GmbH (CEC) in the following projects shows the research area of our company.
Control of spectral layer properties by optical broad-band spectral analysis in industrial ion beam sputtering processes. The research project is part of the joint research network „Optical control of highly precise concepts for ion beam sputtering” (OptiKontrol) formed by two German and two Russian research partners.
It was CEC's task to investigate a novel method for broad-band optical transmittance and reflectance measurements. This method shall provide in-situ information on optical parameters of growing dielectric layers in industrial ion beam sputtering coating processes. Based on an extensive analysis on parametrising the evaluation and control algorithms, the measurement system was successfully implemented in the control infrastructure of an industrial IBS-coating system. The performance of this measurement system has been evaluated for demanding optical filters. The coating process accompanying characterisation of layer properties for monitoring sensitive fabrication tolerances was successfully demonstrated.
The goal of this project was to develop a compact laser source capable of emitting >60 mW of continuous-wave radiation at 355 nm and with a total power consumption of less than 100W. The laser source will be used in analytical instrumentation technologies in life science and advanced measurement.
An extraction grid design for RF-driven ion sources with collinear grid hole arrangement was elaborated to mitigate contamination in the thin-film deposition process. An assistance ion source with optimized extraction was delivered to our project partner - Laser Zentrum Hannover (LZH). A simulation software based on physical model algorithms was developed to investigate contamination effects of different grid hole geometries.
The development of a collinear grid hole arrangement turned out to be a complete success regarding the initial expectations. By implementing the new developed ion extraction grid system, it was possible to suppress contamination in the deposition process below the relevant limit of detection. A demonstration grid system has been integrated into the deliverable to LZH and evaluated concerning the overall performance and its contamination tendency. The project partners confirmed the successful implementation of the optimised system in their production environment. Furthermore, the computer simulation of different hole geometries was successful although the time expenditure was underestimated so that only selected geometries were investigated in simulation.
BINGO - Bonding of optical components
In our latest and ongoing research project, CEC is working on bonding arbitrarily coated and uncoated substrate materials in the controlled environment of our machine's vacuum. Bonding in this context means the formation of covalent bonds between the substrates which makes for a mechanically highly robust sample. During this process, no intermediate layer will form on the surfaces of contact, meaning no intermixing of the surface layers. This minimises the negative impact on the optical and thermal properties of the sample. Through this process, our machines will not only be able to do high-quality coatings but will also be capable of manufacturing complex optical systems, e.g. high-power laser media, in the near future.
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