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Photonic Doppler Velocimetry (PDV)
Photonic Doppler Velocimetry (PDV)
Precise measurement of short duration shock events
Photonic Doppler Velocimetry, allows accurate velocity measurement of materials subjected to shock events. Initially developed to better understand the high energy physics related to explosive events, PDV analysis continues to evolve, with tremendous potential to advance research related to dynamic compression and shock physics.
The events that are analyzed with a PDV system are generally a “single shot” event. Often many laser channels are acquired, as well as other sensor types, to fully understand the response of the experiment. High signal fidelity acquisition on low amplitude signals is critical to the quality of the experiment results.
Reliable Detector and Digitizer Solutions
With PDV experiments potentially being very expensive, sometimes exceeding millions of dollars for a single shot, a highly reliable signal acquisition system with outstanding signal fidelity is a paramount concern. Tektronix has a long history of providing excellent signal fidelity on single-shot acquisitions, with sample rate and bandwidth necessary to properly represent the sensed event. Performance you can count on.
The Tektronix DPO7OE products provide a calibrated O/E that is an ideal detector to use in front of the DPO70000SX or DPO70000DX oscilloscope performing the digitizer function. This combination provides high channel count options, extremely accurate and stable acquisition timing, acquisition rates up to 200GS/s, bandwidths of 33GHz and 59GHz to support even the fastest gas gun experiments, and superior SNR (Signal Noise Ratio) to provide the best results in your high-speed event analysis.
This photo was taken from an article titled "A view on the functioning mechanism of EBW detonators -part 2: bridgewire output" and is an example PDV trace for a bridgewire fired at all-fire voltage. (copyright E A Lee et al 2014 J. Phys.: Conf. Ser. 500 052024).
Half the size, all the performance
Channel count on PDV systems continues to increase, as researchers attempt to learn more about each event. Multiplexed (MPDV) systems are now commonly used to pack more data into a single digitizer channel, and minimize space consumed by the digitizer system. The Tektronix DPO70000SX units provide the same digitizer channel count, with bandwidths up to 70GHz, in approximately half the rack space (4U) compared to a conventional desktop oscilloscope.
12-bit Digitizers – High Fidelity, High Channel Density
Monitoring the PDV system to validate a critical shot can require hundreds of sensors and precision acquisition hardware. The 5 Series MSO Low Profile oscilloscopes offer the next generation of high performance 12-bit digitizers. Providing high channel density in easy stackable rack mounts, one can achieve 100’s of synchronized channels all within 350ps. These 12-bit digitizers with an adjustable front end support down to 1mV/div hardware sensitivity and provide all the other perks of a standard high performance oscilloscope. Expand your PDV system diagnostic monitoring capability, while saving lab space and your budget.
See your real signal
DPO70000DX
Industry-leading signal fidelity, minimum noise and highest effective number of bits (ENOB) provides confidence you are seeing your real signal and measuring it precisely. High signal-to-noise ratio and low internal noise floor enable you to perform precise characterization of your designs.
- Bandwidth enhancement eliminates imperfections in frequency response to the probe tip
- Low jitter noise floor and high vertical accuracy provide additional margin in your measurements
- Wide range of probes simplify complex measurement setups and maintain signal integrity
Half the size, all the performance
DPO70000SX
DPO70000SX ATI Performance Oscilloscopes deliver the industry’s most accurate capture of high-speed signal behavior to verify, validate and characterize your next generation designs. Capture up to 70 GHz signals with the lowest noise and highest fidelity, ensuring the most accurate measurements of your signal’s true characteristics.
- Deploy units individually or easily aggregate into a multi-unit system
- Quickly reconfigure system
- Configure up to 16 synchronized optical acquisition channels with the DPO7OE1/DPO7OE2 probe
Scalable Channel Density
5 Series MSO Low Profile
In applications that demand extreme channel density, the 5 Series MSO Low Profile oscilloscope offers 8 channels, plus auxiliary trigger input, in a space-saving 2U rack instrument – at low cost-per-channel. Each FlexChannel provides 1 GHz, 6.25GS/s with 12-bits of resolution and sets a new standard for high density performance.