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RAMAN FILTERS

Photonics Spectra
Nov 2003
Semrock Inc.Request Info
 
Semrock Inc. Semrock Inc. has introduced three thin-film filters to be used with 325-nm HeCd, 473-nm argon-ion or doubled Nd:YAG, and 1064-nm Nd:YAG lasers in Raman spectroscopy. The ultrasharp long-wave pass filters rely on ion-beam sputtering technology and the company's proprietary manufacturing tools to block the laser line with optical density of ≥=6, and they transmit the wavelengths that are only 1% longer than the laser line. The company says the performance of these Raman edge filters is highly reliable and stable.


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GLOSSARY
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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