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 DuoScan averaging mode
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
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 DuoScan with motorized stage
Macro-mapping with full sample coverage using DuoScanTM with motorized stage

Technical Notes

RA-TN01 - Introduction to Raman Imaging

RA-TN04 - DuoScan Imaging