How DuoScan works – the three modes

  1. Averaging mode

In averaging mode the laser spot is continuously scanned across a user-defined square surface

Comparison between standard point measurement and DuoScanTM averaging mode with corresponding laser spot size and power densities on sample

2. Step-by-Step mode

In step-by-step mode a sample area is selected and the sample is scanned point by point across the chosen area.

Mapping without moving the sample with 50 nm step size

3. Macro-mapping mode

Macro-mapping mode enables large sample surfaces to be raster-scanned to record an average spectrum across the whole surface, ideal for component distribution or to locate contaminents.

Macro-mapping with full sample coverage using DuoScanTM with motorized stage

Technical Notes

RA-TN01 - Introduction to Raman Imaging

RA-TN04 - DuoScan Imaging