Obtaining accessible Raman lines at low wavenumbers can be challenging. Witec’s RayShield Coupler is now available for the alpha300 and alpha500 microscope series. It allows the acquisition of Raman spectra at wavenumbers down to below 10 rel.cm-1, and includes a specialized narrow-band filter set that is aligned to detect Raman lines extremely close to the Rayleigh line while maintaining ideal Rayleigh shielding. As a result, additional spectral information from Stokes and Anti-Stokes Raman signals can be obtained. It’s available for a variety of laser wavelengths from 488 to 785 nm. Witec GmbH
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