This system is a compact laser Raman microscope that can collect both Raman spectra and global images. The collection optics are based on a Leica DMLM microscope. Samples are placed underneath a microscope objective (×5, 20, 50) and are excited by the laser directed through the microscope. The scattered light is collected (180° backscattering) along the same optical path as the incoming laser.

Raman scattered light passes through a notch filter (used as one of the reflective elements for the incident laser beam) through a grating (1800 or 1200 mm/groove) that disperses the scattered light over a CCD array detector.

A computer-controlled 3-axis motorised stage with auto focus abilities allows 3-D mapping with 1-5 mm spatial resolution or 2-D global imaging. The instrument operates over six laser lines ranging from 488 to 752 nm making it highly versatile in terms of sampling and allowing for resonance Raman spectroscopy.