Ocean Optics QE Pro User Manual

QE Pro

High Performance Spectrometer

The sensitivity and large dynamic range of the QE Pro combine to make it the
highest-performance miniature spectrometer in its class. Absorption, reflectance,
fluorescence and Raman measurements all benefit from the superior performance
of the QE Pro. For advanced measurements, a 15,000 spectra buffer ensures data
integrity at high collection rates and an advanced optical design and thermoelectric
cooler combine to provide thermal stability over long-term measurements.
Whether for high speed or wide concentration range measurements, the QE Pro
brings exceptional performance to your lab or process application.

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At a Glance

Wavelength range: Configurations
support the range of 185 – 1100 nm

Wide Dynamic Range

Low-noise electronics and an 18 bit A/D converter double the QE Pro’s dynamic range
and increase the sensitivity by a factor of two compared to typical back-thinned CCD
array miniature spectrometers. These enhancements drive applications benefits such as
improved lower limit of detection for both absorption and fluorescence measurements
and enable measurements over a wider concentration range.

QE Pro Spectrum for Toluene

Interchangeable slits: Multiple widths
from 5 µm-200 µm; SMA 905 and FC
connectors

Optical resolution: 0.07-20 nm
(FWHM) depending on configuration

System SNR: 1000:1

A/D resolution: 18 bit

Dynamic range: 85,000 (typical)

Stray light: <0.08% at 600 nm;

0.4% at 435 nm

Buffering: 15,000 spectra

TEC: Cooling to -40 ºC below ambient

-40 ºC to +50 ºC temperature limits

Intensity (counts)

-1

Raman Shift (cm

The high-sensitivity QE Pro is a good option for measuring the Raman
shift of aromatic hydrocarbons such as toluene.

)

Buffering for Fast Measurements

To support fast, and full-spectrum data acquisition, the onboard buffer stores up to
15,000 spectra. This maintains data integrity by buffering time stamped spectra for USB
communications. Buffering enables full-spectrum kinetics measurements to be performed
every 8 milliseconds or 125 measurements per second.

Reliable Performance

Thermoelectric cooling (TEC) precisely controls the temperature of the detector.
Cooling the detector dramatically reduces the effect of thermal noise and improves
overall the stability of the detector for lengthy measurements. The TEC in the QE Pro
holds data stability to 4 dark counts over a 60 °C ambient temperature range, giving you
the highest quality data. This stability performance makes the QE Pro ideal for demanding
online and at-line quality control measurements susceptible to temperature changes.

Learn more online at
www.oceanoptics.com

Contact an Ocean Optics
Application Scientist
for details and pricing

Kinematic mounts are used to position the optical elements of the QE Pro to increase
accuracy and reliability. New RS-232 communication protocols allow the QE Pro firmware
to be updated in the field, ensuring you have the most up-to-date product.

Contact an application sales

engineer today to find out more.

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