Optics miniaturization strategy for demanding Raman spectroscopy applications.

ABSTRACT: 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. High performance and versatility are demonstrated in use cases including quantification of methanol in bever

SUBMITTER: Ilchenko O 

PROVIDER: S-EPMC11001912 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature