Feature :

• Optimized Optics : The FVS-6000 optical system uses a 28 deg interferometer with gold-coated corner cube mirrors for high throughput and to minimize polarization effects with reflective optics to eliminate artifacts caused by birefringence, resulting in very high-quality VCD data.
• Thermal Stability : Multi-zone temperature control with feedback monitoring throughout the optical bench ensures that thermal stability is well maintained for the long-term baseline stability required for long-duration measurements. The key components of the high-intensity ceramic light source), photo-elastic modulator, interferometer, sample compartment, and detector are separately controlled.
• Wide Spectral Range : The FVS-6000 uses a unique, highly sensitive narrow-band MCT detector specially developed for VCD measurement across the spectral range 3,200-850 cm^-1. Optional detectors and filters can be added to extend the range to 4,000-750 cm^-1, typically for the measurement of OH and NH bands. Detectors are easily exchanged without the need for manual alignment, and optical filters can be selected automatically.
• 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：Phase-sensitive lock-in detection uses DSP (Digital Signal Processing) with a sophisticated algorithm optimized for VCD and offers a dramatic improvement in the S/N ratio, particularly compared to more complicated optical designs.
• Purge：The interferometer and optics, sample chamber, and detector housing are all independently purgeable with N2 for high-precision data free of interference from atmospheric gases.
• Long Term stable Measurement：The FVS-6000 MCT detector includes an extra large LN₂ dewar for up to 15 hours of operation without refill