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Long-Wave Pass Filters

Mar 2013
Semrock Inc.Request Info
ROCHESTER, N.Y., Dec. 17, 2012 — Semrock Inc. has announced expanded wavelengths for the EdgeBasic line of long-wave pass edge filters. Ten laser wavelengths have been added to the previous 19. The filters offer steep edge locations from 325 to 1319 nm, with extended blocking at and below the laser line, which is combined with consistent and extended high-transmission passbands.

The filters were designed from the glass up and are suitable for fluorescence imaging and metrology applications. Used in application-specific Raman spectroscopy, they are a good fit when high laser-line blocking is required and the Raman shift measurement is not too small. They have hard-coated, no-burnout durability that is backed by a five-year warranty.


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The science of measurement, particularly of lengths and angles.
Raman spectroscopy
That branch of spectroscopy concerned with Raman spectra and used to provide a means of studying pure rotational, pure vibrational and rotation-vibration energy changes in the ground level of molecules. Raman spectroscopy is dependent on the collision of incident light quanta with the molecule, inducing the molecule to undergo the change.  
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