Tunable Spatial Resolution Focused Laser Differential Interferometer for Density Fluctuation Measurement
Source abstract
Abstract
We first propose and demonstrate a novel approach for achieving a focused laser differential interferometer (FLDI) system with tunable spatial resolution. The spatial resolution of the FLDI can be adjusted continuously between 83 μm and 382 μm. The density fluctuation of a supersonic shear flow is measured using the FLDI system with a spatial resolution of 182 μm, and the density fluctuations at different locations of the supersonic shear flow are measured and analyzed. The ability to adjust the spatial resolution in this work is of great significance for enhancing the spatial resolution and flexibility of the FLDI system.
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Research context
OpenAlex topics: Advanced Sensor Technologies Research · Spectroscopy and Laser Applications · Scientific Measurement and Uncertainty Evaluation
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Facility Design and Instrumentation Institute, China Aerodynamics Research and Development Center, Mianyang 621000, China
Funding
the National Key R&D Program of China
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