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Chapter 1
Introduction
Product Overview
The Ocean Optics QE
Pro
Spectrometer is a scientific-grade spectrometer that is ideal for researchers and
industrial customers. Its broadband sensitivity, from UV to NIR, makes it suitable for a wide range of
applications, while its high sensitivity and thermo electric cooler enable effective measurements at very
low light levels. The QE
Pro
also has the highest dynamic range of any fiber optic CCD spectrometer in
its class.
Two LEDs are provided to monitor spectrometer and TEC operation. The QE
Pro
operates from power
provided from a se5VDC power supply.
Ocean Optics QE
Pro
High-Sensitivity Fiber Optic Spectrometer
The QE
Pro
features a Hamamatsu low-etaloning, back-thinned FFT-CCD detector with a 2-D
arrangement of pixels (1044 horizontal x 64 vertical) that is responsive from 200-1100 nm and has a peak
quantum efficiency of ~90% (with a QE of 65% at 250 nm). The detector’s columns are binned, or
summed, inside the detector prior to the readout process, thereby minimizing readout noise. Additionally,
the detector can be cooled from 40
°
C below ambient up to 50
°
C with the onboard TE-Cooler to reduce
dark noise. The reduction of noise and dark signal allows integration times of the spectrometer (analogous
to the shutter speed of a camera) of up to 60 minutes, which greatly enhances the detection limit in low-
light level applications. The back-illuminated detector has enhanced response in the UV. The inherent UV
response eliminates the need for UV-sensitive detector coatings that can be difficult to apply consistently
from batch to batch.
The combination of the spectrometer’s low-noise detector and 18-bit A/D Converter delivers a dynamic
typical range of ~85,000:1 and a signal-to-noise ratio of 1000:1 (at full signal).
Replaceable slits are offered for added convenience. Deep UV option includes purge port.
