
Coherent’s patented THz-Raman Spectroscopy Systems extend the range of traditional Raman spectroscopy into the terahertz/low-wave number, exploring the same range of energy transitions as terahertz spectroscopy – without limiting the ability to measure the fingerprint region. This region reveals a new “Structural Fingerprint” to complement the traditional “Chemical Fingerprint” of Raman, enabling simultaneous analysis of both molecular structure and chemical composition in one instrument for advanced materials characterization.
Clear real-time differentiation of structural attributes of the material enables clear identification and analysis of polymorphs, raw material sources, defects and contamination, crystal formation, phase monitoring, and synthesis methods. Real-time, simultaneous measurement of both composition and structural analysis eliminates the need for multiple samples and instruments, lowering capital, training, and maintenance costs.
The THz-Raman spectral region covers both Stokes and anti-Stokes signals from ±5 cm-1to 200 cm-1, (or 150 GHz to 6 THz), which contain important structural information about the molecule or crystal lattice. This region reveals a new “structural fingerprint” to complement the traditional chemical fingerprint of Raman, enabling simultaneous analysis of both molecular structure and chemical composition in one instrument for advanced materials characterization.
Parameter | Units | Specification | ||
---|---|---|---|---|
Wavelength | nm | 532 | 785/808 | 976/1064 |
Power at sample port (min) | mW | 50 to 250* | 300 | 300 |
* Specify power level at time of order | ||||
Spectrometer*: | Fixed Grating Spectrometer | Tunable Grating Spectrometer | ||
Spectral Range (typical) | -200cm-1 to +1800cm-1 | 0-1100 nm (w/Si Detector) | ||
Spectral Resolution | 2.5cm-1 to 5cm-1 | 1.25cm-1 or greater | ||
Computer Interface | USB | USB |