Presentation + Paper
23 April 2019 Digital holography wavefront sensing with a supersonic wind tunnel
Author Affiliations +
Abstract
The Air Force Research Laboratory (AFRL) Directed Energy Directorate is completing a supersonic wind tunnel to characterize aero-optics effects in high speed flow fields. Optical characterization is accomplished by transmitting a beam of light transverse to the direction of air flow via access windows, thereby illuminating the flow region, a select volume of which is recorded by a suite of sensors. Quantitative measurements of the flow are made using two wave-front sensors (WFS), a Shack-Hartmann (SH) WFS and a digital holography (DH) WFS. Qualitative measurements are made using a traditional Schlieren imaging system. Parenthetically, in addition to characterization of aero-optics effects, we expect to be able to numerically propagate to different planes in the supersonic flow field to characterize boundary layer effects. This paper reviews our wind tunnel system’s requirements and, in particular, the design of the DH WFS.
Conference Presentation
© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Christopher C. Wilcox, Cameron J. Radosevich, Keith P. Healy, Andrea L. Tuffli, Brian D. Agena, Mark F. Spencer, and Donald J. Wittich III "Digital holography wavefront sensing with a supersonic wind tunnel", Proc. SPIE 11030, Holography: Advances and Modern Trends VI, 110300L (23 April 2019); https://doi.org/10.1117/12.2521337
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CITATIONS
Cited by 3 scholarly publications.
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KEYWORDS
Wavefronts

Sensors

Wavefront sensors

3D image reconstruction

Digital holography

Cameras

Beam splitters

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