Raman Imaging with a Fiber-Coupled Multichannel Spectrograph

Until now, spatial-resolved Raman Spectroscopy required a time-consuming step by step scanning of the sample. Here we present a new technique, which allows the capture of an entire Raman image within one single exposure. The Raman scattering, arising from the sample was collected with a fiber-coupled high-performance astronomy spectrograph. The probe head consisting of an array of 20 × 20 multimode fibers was linked to the camera port of a microscope. To demonstrate the high potential of this new concept, Raman images of reference samples were recorded. Entire chemical maps were received without any scanning procedure.