Renishaw Showcase New Eclipse Filters for Quick and Easy Low Wavenumber Analysis at Pittcon 2013

Study low wavenumber Raman features quickly and easily with Renishaw's Eclipse filters for the inVia Raman microscope; block the laser, not Raman bands.

Most materials can be successfully analysed by studying the Raman bands in the 'fingerprint' region (200 cm-1 to 1800 cm-1). However, Raman analysis at much lower Raman shifts (below 200 cm-1) can reveal very valuable information for vibrations such as:
• shear modes
• lattice modes
• acoustic modes
• breathing modes
• folding modes
• rotational modes
• heavy atom vibrations

Eclipse performance
Eclipse filters make low wavenumber Raman analysis easy:
• performance down to 5 cm-1 (typical - excitation specific)
• high signal levels because of high transmission efficiency for Raman-scattered light
• low noise levels from strong blocking of the Rayleigh-scattered light
• suitable for photoluminescence measurements, in addition to Raman measurements (broad bandpass)
• study both Stokes and anti-Stokes scattering; notch, rather than edge filter technology
• longevity; robust glass-based filter technology
• trouble-free use, from highly stable Renishaw mechanical mounts
• easy switching between filters with Renishaw's encoded multi-filter motorised mount

For more information about Eclipse—and other Renishaw filters—contact a local sales representative or visit www.renishaw.com/invia

Image: Stokes/anti-Stokes Raman bands of L-cystine (a standard sample for testing low wavenumber performance), showing bands at both 9 cm-1 and 15 cm-1.