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SPECTROMETERS

Photonics Spectra
Jan 2008
Avantes BVRequest Info
 
Avantes BV offers three AvaFast preconfigured spectrometers as stock items, all of which feature a USB 2.0 interface, a 16-bit A/D converter and an SMA 905 connector. For use in the UV/VIS/NIR, in the 200- to 1100-nm range, the AvaSpec 3648-UA-25-AF has a 25-μm slit and 1.4-nm resolution for measurements from high-intensity sources, and AvaSpec 2048-UA-50-AF has a 50-μm slit and 2.4-nm resolution for absorbance, emission and irradiance measurements. For use in the VIS/NIR, in the 360- to 1100-nm range, the AvaSpec 2048-VA-200-AF has a 200-μm slit and 8-nm resolution for high-sensitivity applications such as fluorescence. The resolutions are at full width half maximum.


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GLOSSARY
fluorescence
The emission of light or other electromagnetic radiation of longer wavelengths by a substance as a result of the absorption of some other radiation of shorter wavelengths, provided the emission continues only as long as the stimulus producing it is maintained. In other words, fluorescence is the luminescence that persists for less than about 10-8 s after excitation.
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