1. Digital adaptive optics with interferometric homodyne encoding for mitigating atmospheric turbulence.
- Author
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Neuner III, Burton, Lilledahl, Skylar D., Laxton, Benjamin, and Drexler, Kyle R.
- Subjects
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ADAPTIVE optics , *ATMOSPHERIC turbulence , *IMAGING systems , *TWO-dimensional bar codes , *IMAGE reconstruction , *IMAGE processing , *PHASE modulation - Abstract
Digital adaptive optics (DAO) created using homodyne encoding can mitigate atmospheric turbulence in passive imaging systems. This work demonstrates a self-referencing homodyne interferometry technique that combines the passive imaging utility of multiframe algorithmic procedures with the single-frame correction capability of the Shack–Hartmann adaptive optics technique. This paper presents image reconstruction improvements through the addition of (1) phase diversity modulation techniques within the interferometry reconstruction algorithm and (2) temporal image processing techniques applied after the interferometry reconstruction algorithm. By imaging quick response codes through a turbulent air chamber in the laboratory, it was possible to quantify the machine-readable performance gain provided by DAO when compared with a standard imaging camera. Results from this research verify that DAO from homodyne encoding provides turbulence mitigation for single frames of data, paving the way for environmentally robust, high-speed, self-contained imaging systems. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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