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OPTICAL FILTERS

Photonics Spectra
Feb 2008
Optometrics CorporationRequest Info
 
Optometrics Corp. is offering both long- and short-pass optical filters that are ring-mounted and that are scribed and sealed for moisture protection. Applications for the Edge Filters include Raman spectroscopy, astronomy and order sorting. The short-pass filters are available in 50-nm increments from 450 to 1000. The long-pass filters also are available in 50-nm increments, from 500 to 1500. They have a borofloat substrate and an operating temperature of –20 to 75 °C.


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GLOSSARY
astronomy
The scientific observation of celestial radiation that has reached the vicinity of Earth, and the interpretation of these observations to determine the characteristics of the extraterrestrial bodies and phenomena that have emitted the radiation.
optical filters
An optical element that blocks or transmits a selected wavelength of light. Optical filters can either be absorption filters or interference filters. Absorption filters absorb any unwanted wavelengths while the interference filter will use the effects of constructive and destructive superposition to transmit only the selected wavelength.
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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