Oleksii Ilchenko, Yurii Pilhun, Andrii Kutsyk, Denys Slobodianiuk, Yaman Goksel, Elodie Dumont, Lukas Vaut, Chiara Mazzoni, Lidia Morelli, Sofus Boisen, Konstantinos Stergiou, Yaroslav Aulin, Tomas Rindzevicius, Thomas Emil Andersen, Mikael Lassen, Hemanshu Mundhada, Christian Bille Jendresen, Peter Alshede Philipsen, Merete Hædersdal, Anja Boisen
Raman spectroscopy provides non-destructive, label-free quantitative studies of chemical compositions at the microscale as used on NASA's Perseverance rover on Mars. Such capabilities come at the cost of high requirements for instrumentation. Here we present a centimeter-scale miniaturization of a Raman spectrometer using cheap non-stabilized laser diodes, densely packed optics, and non-cooled small sensors. The performance is comparable with expensive bulky research-grade Raman systems. It has excellent sensitivity, low power consumption, perfect wavenumber, intensity calibration, and 7 cm-1 resolution within the 400-4000 cm-1 range using a built-in reference...
April 8, 2024: Nature Communications