Lasers & Optical Fibers Technologies
Compact Photonic Doppler Velocimeter (PDV system) / Photonic Doppler Velocimetry
For more reliable measurement on your high speed phenomena
Compact Photonic Doppler Velocimeter (PDV system) summary
IDIL Fibres Optiques developed the first industrial Photonic Doppler Velocimeter for shocks and detonic applications. This technology allows to measure unique or multiple speeds, in the range of 0 to 20 km/s with an excellent temporal resolution. A dedicated software, based on a Fourier Transform algorithm, allows a rapid visualization of the speed fields. With a 5U height, the compact and modular system allows the user to build its PDV system from 1 to 4 measurement channels.
This new system integrates some improvement such as : low velocity measurement option with a fixed shift frequency, red alignement laser directly integrated on each output, all parameters adjustable on touchscreen…
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- Non-contact laser measurement
- Compact
- Controlled by 7” touchscreen
- Modular and scalable (1 to 4 channels)
- Attractive initial cost for one channel system
- Easy use and installation
- Frequency up-shifting
- Continue or pulse operation
- Fibered VISAR option
- Shock physics
- Solid materials
- High explosives
- Gun
- Particle ejection
- Plasma..
| Photonic Doppler Velocimeter | |
|---|---|
| Displacement interferometer | High dynamics (>27 dB) |
| Eye safety (1.55 μm), all fibered design | Minimum reflectance required -60 dB |
| Speed measurement : 0 to 20 km/s | High sensitivity (>50 dB) |
| Speed uncertainty : Δt Δv = 150 ns.m/s | Up to 4 measurement channels |
| (function of the width of the Fourier window analysis) | Ethernet interface |
| Speed uncertainty : +/- 3 m/s for 50 ns | Continuous or triggered mode |
| Speed uncertainty : +/- 0.5 m/s for 300 ns | Low heat deposition on sample |
| Time uncertainty : 200 ps on the raw signal, | - |
| 5 ns on velocity after processing | Manufactured under CEA license |
The processing software allows : the visualisation of raw signals (bin, wfm, csv and most of native file of digitizer); Time-frequency treatment and display; Multi-speed visualisation and Automatic speed extraction.
The system contains : 1 mainframe with high power laser (up to 350mW by channel) and one reference laser; 4 slots for PDV measurement channel; 1 processing software; 1 flight case. (digitizer not provided)
