Photometry represents a fundamental discipline in the field of thin-film optics. It is used for both the development of single layers and the characterization of optical filters. The spectra serve the modeling of the refractive index and layer thickness or the direct quality control with regard to the specification.
In addition to the utilization of commercially available spectrophotometers, the Fraunhofer IST also realizes setups for specialized customer requirements, for example for the measurement of particularly steep edge filters or with particularly high resolution for in-situ measurements.
The two spectrophotometers PerkinElmer LAMBDA 950 and AGILENT CARY 5000 enable the following UV-VIS-NIR measurements:
A BYK haze-gard plus for fast integral measurements in the visible spectral range allows the determination of (ASTM D-1003/D-1004):