Fig. 1.

Schematic description of the multifocal RMS instrument. An LC-SLM phase hologram modulates the laser (1) creating an arbitrary excitation pattern in the sample plane shown in (2) (blue circle: 0th order beam on optical axis, red: 1st order reconfigurable off-axis beam). The sampling positions are synchronized with reflective slits on a DMD to spatially filter the Raman light (3) before dispersion onto a CCD inside the spectrometer (4). Glossary: Ti:sapphire laser (TSL), laser clean-up filter (LCF), half-wave plate (HWP), beam expander (BE), liquid-crystal spatial light modulator (LC-SLM), telescope (TEL), dichroic mirror (DCM), inverted optical microscope (IOM), microscope objective (OBJ), digital micro-mirror device (DMD), notch filter (NF) imaging spectrometer (IS), Raman CCD detector (CCD), microscope side-port camera (MSC), DMD inspection camera (DRC).