Optimized Optics
The FVS-6000 optical system uses a 28 deg interferometer to minimize polarization effects and reflective optics to eliminate artifacts caused by birefringence, resulting in very high-quality VCD data. The isolated mount of the IR light source (high intensity ceramic light source for maximum energy and a lifetime of up to ten years) and the thermal control of the PEM crystal offers long-term baseline stability required for long duration measurements.
Wide Spectral Range
The FVS-6000 offers spectral measurement across a wide spectral range from 3200-850 cm-1 as standard. Optional detectors and filters can be added to extend the range to 4000-750 cm-1, for measurement of OH and NH bands. Detectors can be easily exchanged without the need for manual alignment, and optical filters can be switched by a PC-controlled 6-position filter wheel.
Narrow Band Mode
The ‘narrow band mode’ allows measurements of small peaks at targeted absorption bands with high sensitivity using optional band pass filters.
VCD Auto-Alignment
The auto-alignment function optimizes the VCD optics to reduce linear anisotropy artifacts. No manual alignment is required when the detector and/or optical filters are exchanged.
Lock-in Detection with DSP
A phase-sensitive lock-in detection uses DSP (Digital Signal Processing) with a sophisticated algorithm optimized for VCD and offers dramatic improvement in the S/N ratio.
Purge
The optics, sample chamber and detector housing are all purgeable to obtain high-precision data free of interferences from environmental gases.
Optional accessory for auto-sampling
Detector with extra large LN2 dewar for up to 15 hours of operation without refill