DopplerPXIe – Photonic Doppler Velocimetry Module

The DopplerPXIe is a revolutionary PXIe optical module that enables compact, inexpensive and robust Photonic Doppler velocimetry.

Velocity measurement of fast-moving materials is essential to a growing number of scientific and technical fields including shock physics, the study of material properties, hypervelocity impact testing, detonics and shock wave experiments.

Photonic Doppler velocimetry (PDV) is an established technique used to measure high-velocity events up to tens of km/s. It is also known as heterodyne velocimetry and can be used as a supplementary tool or replacement for Velocity Interferometer System for Any Reflector (VISAR).

With the DopplerPXIe optical module, we provide the necessary equipment to perform reliable, repeatable measurements for simple or multiplexed PDV experiments built on the proven PXI platform.

The DopplerPXIe supports traditional homodyne and frequency-shifted heterodyne PDV testing.

We also provide the matrIQ-Doppler, an ultra-compact benchtop instrument built with the same PDV measurement functionality.


accurate power controlAccurate control and measurement of target, probe and reference power.

All of your optical power management in a single-slot PXIe module. This purpose built DopplerPXIe module streamlines your PDV test setup.

reliable resultsGenerate reliable, repeatable measurements.

Minimise the number of manual optical connections necessary with the all-in-one optical doppler module for reliable and repeatable measurements, every time.

multi-channel systemsEasily build scalable, multi-channel systems.

Combine with the LaserPXIe and O2EPXIe modules and fit up to 8-channels in a single 18-slot PXIe chassis.

 small footprintDrastically reduce the footprint of your test setup.

Replace the stack full of bulky individual optical test instruments with one small PXIe module and save your valuable lab space.

3arranty_60x60Product warranty

This product comes with a 3 year warranty.

Example 8-channel PDV setup

The 8-channel PDV system shown below consists of four LaserPXIe-1002 laser sources (Target and Reference), and eight DopplerPXIe modules. The output of the DopplerPXIe module is sent to a four high channel and high bandwidth O2EPXIe-1101 where the probe and reference laser beat. The electrical beat signal is then digitized with an oscilloscope.



All of this functionality is incorporated into the open standard PXI platform. This provides the user with flexibility to create large multiplexed systems and upgrade the system over time with higher bandwidth detectors and digitizers.



8-channel PDV system in an 18-slot PXIe chassis (8 DopplerPXIe modules, 2 four-channel LaserPXIe modules, 4 two-channel O2EPXIe modules)

Don’t require PXI?

Our Photonic Doppler Velocimetry system is also available in a compact, benchtop form factor. The matrIQ-Doppler offers the same functionality as the DopplerPXIe, and has simple USB and Ethernet connectivity for low channel count PDV systems.


Download Spec Sheet

For more information, download the DopplerPXIe Spec Sheet which includes full technical specifications.

 DopplerPXIe Spec Sheet


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Application Notes

Download the Photonic Doppler Velocimetry application note below.

 PDV Application Note


installClick here to download installation guides, drivers and user manuals for this product.

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