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THz-Raman® Spectroscopy Systems

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

Applications

Application
Polymorph Identification
Crystallization Monitoring
Process Analytical Test
Polymer Analysis
Transmission Raman
Explosives & Drug Detection
2D Nanomaterials
Photovoltaic Materials

Related Materials

Case Studies

Documents

Coherent

THz-Raman – Accessing molecular structure with Raman spectroscopy for enhanced chemical identification, analysis and monitoring

Case Studies

Brochures

Ondax Raman Products Brochure

Extending Raman into the THz Domain

Please Read Before Continuing

Risk factors: Except for the historical information contained here, many of the matters discussed in this Web site are forward-looking statements, based on expectations at the time they were made, that involve risks and uncertainties that could cause our results to differ materially from those expressed or implied by such statements. These risks are detailed in the “Factors That May Affect Future Results” section of our latest 10-K or 10-Q filing. Coherent assumes no obligation to update these forward-looking statements.


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