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20 August 2020 Parallelization of digital holographic wavefront sensing
Thomas Cabell-Kluch, Troy Rhoadarmer, Steve Gibson, Jeannine Knight
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Proceedings Volume 11508, Unconventional Imaging and Adaptive Optics 2020; 115080I (2020) https://doi.org/10.1117/12.2568809
Event: SPIE Optical Engineering + Applications, 2020, Online Only
Abstract
We evaluate a novel wavefront sensing technique using digital holography. This technique divides the aperture plane into multiple subapertures with a unique digital holographic image created in each subaperture. This reduces the complexity and allows for parallelization of the total wavefront computation. This is a key result, as the associated decrease in the processing latency will increase the available bandwidth of an adaptive optics system. We demonstrate this technique through laboratory testing and show that the wavefront sensor can accurately measure phase degradations on a sample target image.
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Thomas Cabell-Kluch, Troy Rhoadarmer, Steve Gibson, and Jeannine Knight "Parallelization of digital holographic wavefront sensing", Proc. SPIE 11508, Unconventional Imaging and Adaptive Optics 2020, 115080I (20 August 2020); https://doi.org/10.1117/12.2568809
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KEYWORDS
Digital holography
Wavefront sensors
Wavefronts
Holography
Phase measurement
Digital imaging
Fourier transforms
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