High confocal performance – DSF –
The DSF mechanism, which consists of the confocal aperture and pinhole slit, improves the depth resolution in Raman measurements (to 1 μm at Si substrate).
DSF confocal optics
Measurement of carbon nanotube sample
Improved depth resolution enables the collection of Raman scattering light only from the measurement point (focal plane).
Measurement in ultra low-wavenumber
NRS-5500/7500 has capability to install 3 rejection filters, which enables the adjustment of the incident angle individually. This feature allows measurements to be taken in ultra low wavenumber regions.
Raman spectrum of L-cystine