Lasers & Optical Fibers Technologies
Photonic Doppler Velocimeter 32 channels (PDV) / Photonic Doppler Velocimetry
IDIL Fibres Optiques' Photonic Doppler Velocimeters (PDV) are simply the best systems for shocks and detonic applications.
Photonic Doppler Velocimeter 32 channels (PDV) summary
The PDV technology allows more reliable measurement on your high speed phenomena with unique or multiple speeds, in the range of 0 to 20 km/s with an excellent temporal and velocity resolution. A dedicated software, based on a Fourier Transform algorithm, allows a rapid visualization of the speed fields.
The multiplexing system allows the user to get 32 PDV measurement channels with only 4 digitizer channels. Other characteristic qualities are: the non-contact laser measurement, the frequency up shifting, amplification of the reflected signal.
A new X-small PDV system offers the same performance quality in a more compact (5U height) packaging. This solution allows up to 4 measurement channels.
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- Non-contact laser measurement
- Controlled by software
- Up to 32 channels
- Frequency up-shifting
- Amplification of the reflected signal
- Pulse operation
- Temporal multiplexing
- Shock physics
- Material studies
- High explosives
- Gun
- Particles ejection
- Detonic
- 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 32 measurement channels |
| (function of the width of the Fourier window analysis) | Ethernet interface |
| Speed uncertainty : +/- 3 m/s for 50 ns | 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 system contains | |
| High power laser (Up to 200mW by channel) | 1 |
| Reference laser | 1 |
| PDV measurement channels | Up to 32 |
| Processing software | 1 |
| Cabinet | 1 |
(digitizer not provided)
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.
