QE65000 Spectrometer

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The QE65000 Spectrometer is a novel combination of detector, optical bench and electronics technologies that provides users with a remarkably sensitive system for demanding low-light level applications such as fluorescence, DNA sequencing, astronomy and Raman spectroscopy. The QE65000 can achieve up to 90% quantum efficiency with high signal-to-noise and rapid signal processing speed.
Quantum Efficiency to 90%
The QE65000 is the most sensitive spectrometer we have ever developed. It can achieve up to 90% quantum efficiency (defined as how efficiently a photon is converted to a photoelectron).
The QE65000 has a Hamamatsu back-thinned detector with great response in the UV. Its 2D arrangement of pixels (1044 horizontal x 64 vertical) is responsive from 200-1100 nm. The specific range and resolution are determined by your grating and entrance slit selections. The detector's columns are binned, or summed, inside the detector prior to the readout process, thereby minimizing readout noise.
The detector can be cooled down to -20.0 ºC with the onboard TE-cooler to reduce dark noise. The reduction of noise and dark signal allows integration times of the spectrometer of up to 15 minutes, which greatly enhances the detection limit in low-light level applications.
The combination of the spectrometer's low-noise detector and 16-bit A/D Converter delivers a dynamic range of 25000:1 and a signal-to-noise ratio of >1000:1.

Article from Ocean Optics, Inc.

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