Paper 12879-10
Paper 12879-10
Portable shifted excitation Raman difference spectroscopy for agri-photonics: from on-site precision agriculture to smart farming
On demand | Presented live 31 January 2024 
Abstract
Portable Shifted Excitation Raman Difference Spectroscopy (SERDS) using two excitation wavelengths around 785 nm is applied for selected applications in the field of agri-photonics. In the presence of daylight and laser-induced fluorescence, SERDS effectively separates Raman signals of green apple leaves and soil substances with more than 10-fold improved signal-to-background-noise ratios. Major ingredients of bovine milk are clearly detected and identified. A quantitative determination of the fat content in milk is performed and shows a limit-of-detection of 0.1 g / 100 mL. These results show a great potential of portable SERDS for real-world applications, e.g., for precision agriculture and food monitoring.
Presenter
Ferdinand-Braun-Institut (Germany)
Martin earned a Diploma in 2004 and a Doctoral degree in 2009 from the Technische Universität Berlin, Germany, both in physics. His doctoral research was focused primarily on the development of diode-laser-based microsystem light sources for Raman spectroscopy and shifted excitation Raman difference spectroscopy (SERDS). He is with the Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, Berlin and his current research area is in the field of diode lasers, non-linear optics for frequency conversion, and the development of compact diode laser modules and sensor systems for Raman spectroscopy and shifted excitation Raman difference spectroscopy. Martin is author of more than 100 papers and inventor and co-inventor of 6 patents in the field of diode lasers and Raman spectroscopy.