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FO SPECTROMETER

Photonics Spectra
Aug 2004
Avantes BVRequest Info
 
FO SPECTROMETER Avantes BV has introduced the AvaSpec-2048TEC, a thermoelectrically cooled fiber optic spectrometer suitable for low-light-level applications that require integration times of >5 s, including fluorescence and Raman measurements. It has a Sony 2048 CCD detector mounted on a one-stage Peltier cooling element that cools and stabilizes in about 90 s. Cooling also improves the signal-to-noise ratio by a factor of eight and reduces the photoresponse nonuniformity and dark noise by a factor of 10 to 20. The instrument, available in single- or dual-channel models, features 14-bit A/D conversion, USB and RS-232 interfaces, and 14 digital I/O channels.


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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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