Coherent’s patented SureBlock™ XLF Notch Filter Systems enable fast, clear capture of Raman spectra in the Low-Frequency/Low Wavenumber/THz regime (~5 cm-1 to 200 cm-1, or 150 GHz to 6 THz), as well as the standard chemical fingerprint region, using only a standard single-stage spectrometer. THz-Raman® is powerful new technique for molecular and intermolecular structural analysis that is both simple and compact when compared to multi-stage or THz spectrometers, and represents a dramatic shift in the economics, efficiency, and ease of use of Raman spectroscopy.
The unique ultra narrow-band design of our patented SureBlock Notch Filters also delivers exceptionally high throughput of both Stokes and anti-Stokes shifts up to >5000 cm-1 (>150 THz). This allows observation of low-frequency vibrational/phonon modes, differentiation of polymorphs, and other structural characteristics of pharmaceuticals, nano- and bio-materials; trace detection and forensics analysis of explosives and chemical/biological threat agents; and characterization of industrial, polymers, petroleum, heavy metals, and geological samples.
The XLF is an integrated, pre-aligned, light-tight, double-notch system with selectable fiber- or free-space input and outputs, adaptable for use with any single-stage spectrometer. All XLF systems provide > OD 8 Rayleigh suppression, and are engineered for fast, flexible integration with a wide variety of existing commercial spectrometers microscopes, and Raman systems. Available at standard Raman wavelengths including: 488 nm, 514 nm, 532 nm, 633 nm, and 785 nm, and 830 nm, these compact, robust plug-and-play systems deliver incredible speed, resolution, and ease of use, all at an extremely affordable price!
|Parameter||488 nm||514 nm||532 nm||633 nm||78X nm|
|Spectral Transition Width (center to 50% transmission)||<10 cm-1||<10 cm-1||<10 cm-1||<10 cm-1||<10 cm-1|
|Optical Density at Laser Line (each filter)||>4||>4||>4||>4||>4|
|Expected System Optical Density||>8||>8||>8||>8||>8|
|Free Space Aperture Diameter||Standard: 9 mm, custom sizes available.|
|Fiber Input/Output Connector Type||Recommended: FC/PC, others available upon request.|
SureBlock™ XLF Specifications
*Throughput varies with wavelength