From a better understanding of cellular processes to the testing of methods at a molecular level – all this may lead to significant improvements in the treatment of diseases as well as their early recognition and prevention. The advancement of diagnostic imaging methods plays just as important a role as the increasing treatment options using photodynamic therapy.
Classic (linear) optical spectroscopy is applied in analytics. This basic form consists of a broadband light source, a frequency-selecting element, and a detector.
In fluorescence analysis (e.g., in tissue diagnostics), the sample is excited using a specific wavelength.