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Updated: May 24, 2026
10:46
Doppler Optical Coherence Tomography of Retinal Circulation
Published on: September 18, 2012
Note: Frequency-conversion photonic Doppler velocimetry with an inverted circulator
1Sandia National Laboratories, Albuquerque, New Mexico 87185-1195, USA. dhdolan@sandia.gov
The Review of Scientific Instruments
|March 3, 2012
Summary
External, inverted circulators offer a simpler, modular approach to Photonic Doppler Velocimetry (PDV) for dynamic compression research. This technique enables frequency conversion, resolving low-velocity transients missed by conventional PDV systems.
Area of Science:
- Physics
- Materials Science
- Optical Engineering
Background:
- Photonic Doppler Velocimetry (PDV) is a key technique in dynamic compression research.
- Conventional PDV systems are simple but have limitations in certain measurement conditions.
- Universal PDV systems offer flexibility but are complex and costly.
Purpose of the Study:
- To introduce a simpler, modular approach to enhance PDV capabilities.
- To enable frequency-conversion measurements using conventional PDV systems.
- To improve the resolution of low-velocity transients in dynamic compression experiments.
Main Methods:
- Implementation of external, inverted circulators in a modular fashion.
- Adaptation of conventional PDV systems for frequency-conversion measurements.
- Application of a baseline effect correction for improved data accuracy.
Main Results:
- The modular circulator technique allows for easy addition and removal, enhancing system flexibility.
- Frequency-conversion measurements were successfully performed with a conventional PDV setup.
- The corrected frequency conversion system demonstrated the ability to resolve low-velocity transients.
Conclusions:
- External, inverted circulators provide a cost-effective and simpler alternative for enhancing PDV systems.
- This modular approach expands the measurement capabilities of conventional PDV, particularly for low-velocity events.
- The technique offers a practical solution for dynamic compression research requiring high-resolution velocity measurements.
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