Raman Filters
OptiGrate Corp.Request Info
OptiGrate Corp. has unveiled a line of ultranarrow notch and bandpass
filters for Raman spectroscopy applications. The filters have a bandwidth of <10
cm—1, which the company says is about 10 times narrower than other notch and bandpass
filters commercially available for these applications. The filters enable measurements
of ultralow-frequency Raman bands with standard instruments, rather than with the
previous complex, bulky and more expensive tools. Applications include nanotechnology,
pharmacology and semiconductor processing. Using a single-stage spectrometer, Stokes
and anti-Stokes frequencies can be measured down to 4.5 cm—1 with a set of BragGrate
filters. The filters are based on reflecting volume Bragg gratings formed in proprietary
photosensitive glass material, and they are available for a wide range of Raman
laser source wavelengths, including 488, 514, 532, 633, 785 and 1064 nm.
https://www.optigrate.com
/Buyers_Guide/OptiGrate_Corp/c10985
Published: January 2011
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