3D Imaging with Double-Helix Point Spread Function and Dynamic Aberration Correction Using a Deformable Mirror
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
Imaging-based measurements through fluctuating phase boundaries such as free water surfaces or droplets have usually a higher uncertainty due to the changing refraction of light at the boundary. In this paper, a novel measurement system is presented for both 3D imaging with only one camera and aberration correction of light propagation through one boundary. 3D imaging is achieved by introducing a Double-Helix Point Spread Function (DH-PSF). The dynamically introduced aberrations of the phase boundary are measured with a Fresnel Guide Star (FGS) and are corrected with a deformable mirror in a closed-loop system with low latency. The measurement system and the adaptive optics image correction were characterized by means of a linear actuator and a demonstration measurement through an oscillating droplet. For the latter, the uncertainty of a reference flow could be lowered by 58 % using adaptive optics. The technique has the potential to measure complex three-dimensional flows that are optically difficult to access without modification of the experimental setup. Possible applications are optimizations of fuel cells for reducing the consumption of fossil energy.
Details
Original language | English |
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Article number | 107044 |
Number of pages | 11 |
Journal | Optics and lasers in engineering |
Volume | 154 |
Publication status | Published - Jul 2022 |
Peer-reviewed | Yes |
External IDs
unpaywall | 10.1016/j.optlaseng.2022.107044 |
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Mendeley | 48206d94-988d-3918-b9e2-28697aa805ce |
WOS | 000804810800004 |
Keywords
ASJC Scopus subject areas
Keywords
- Aberration Correction, Adaptive Optics, Depth-Resolving Microscopy, Double-Helix Point Spread Function, Flow Measurement, Particle Tracking Velocimetry