Ocean Optics QEPro series – High Sensitivity Spectrometer

High-sensitivity, back-thinned CCD array spectrometers offer outstanding quantum efficiency and low noise operation for low light applications such as fluorescence measurement and Raman analysis.

Product Overview

  • New wavelength-specific preconfigured models — New QE Pro versions for UV-Vis, Vis-NIR and XR (extended-range) measurements
  • Application-specific preconfigured models — QE Pro versions for absorbance, fluorescence and Raman
  • Sensitive – high quantum efficiency detector
  • Powerful – signal-to-noise ratio >1000:1
  • Stable – cooled detector allows low light detection and prevents spectral distortion
  • Configurable – interchangeable slits, internal shutter (optional) and various gratings
  • Buffering — up to 15,000 spectra


Wavelength range: ~185-1100 nm (configurations available within this range)
Optical resolution (w/10 µm slit): 1.20-1.60 nm (FWHM) (preconfigured models)
Integration time: 8 ms-60 minutes
Dynamic range: 85000:1 (single scan)
Signal to Noise Ratio (single scan): 1000:1
Buffering: stores up to 15,000 spectra
Interfaces: USB; SMA 905; RS-232
TEC: -40 °C to 50 °C
Temperature (storage): -30 °C to 70 °C
Temperature (operation): 0 °C to 55 °C
Dimensions: 182 mm x 110 mm x 47 mm
Weight: 1.15 kg

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Robust Optical Design for Great Spectral Performance

The QE Pro is a versatile, high-sensitivity spectrometer ideal for general-purpose and low light level applications such as fluorescence and Raman analysis. The spectrometer has a back-thinned CCD detector
with high quantum efficiency and onboard spectral buffering to ensure data integrity at high collection Robust Optical Design for Great Spectral Performance rates. An optional internal shutter is available for effective management of dark measurements, and the interchangeable slit design allows users to switch between measurements easily.

Although custom QE Pro options are available, you also can choose from among various models — including several new options — that are preconfigured for common applications and wavelengths:

  • Absorbance
  • Fluorescence
  • New! General-purpose UV-Vis (200-775 nm)
  • New! General-purpose Vis-NIR (350-925 nm)
  • New! Extended-range (200-950 nm)
  • New! Raman (w/785 nm excitation)

The sensitivity and large dynamic range of the QE Pro combine to make it the highest-performance modular spectrometer in its class. Key features include advanced optoelectronics and thermoelectric cooling to provide thermal stability, and onboard spectral buffering to ensure data integrity at high collection rates. Users can select from these options or choose a preconfigured model for Raman applications. Setups are available using Raman excitation lasers ranging from 532 nm to 1064 nm.

Model:Range:Blaze wavelength:Resolution*:Grating:
QEPRO-ABS200-950 nmcomposite1.7 nm (10um slit)300 l/mm
QEPRO-FL350-1100 nmcomposite6.9 nm (200um slit)300 l/mm
QEPRO-UV250200-790 nm250 nm1.6 nm400 l/mm
QEPRO-UVV300220-650 nm300 nm1.1 nm600 l/mm
QEPRO-N500790-1000 nm500 nm0.76 nm900 l/mm
QEPRO-N750640-810 nm750 nm0.52 nm1200 l/mm
QEPRO-N1000780-1100 nm1000 nm1.1 nm600 l/mm
QEPRO-XR200190-980 nm200 nm2.1 nm300 l/mm
QEPRO-XR300300-1100 nm300 nm2.1 nm300 l/mm
QEPRO-XR500200-990 nm500 nm2.1 nm300 l/mm

* For 25um slit width

Specifications may be updated without notification


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