Computational imaging for reducing peak irradiance on focal planes

Jacob H. Wirth; Abbie T. Watnik; Grover A. Swartzlander

doi:10.1117/12.2304702

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12 June 2018 Computational imaging for reducing peak irradiance on focal planes

Jacob H. Wirth; Abbie T. Watnik; Grover A. Swartzlander

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Proceedings Volume 10669, Computational Imaging III; 106690U (2018) https://doi.org/10.1117/12.2304702
Event: SPIE Commercial + Scientific Sensing and Imaging, 2018, Orlando, Florida, United States

Abstract

A phase-only filter is placed in the pupil plane of an imaging system to engineer a new point spread function with a low peak intensity. Blurred detected images are then reconstructed in post-processing through Wiener Deconvolution. A Differential Evolution algorithm is implemented to optimize these filters for high SNR across the MTF. These filters are tested experimentally using a reflective Spatial Light Modulator (SLM) in the pupil of a system and successfully show the peak intensity reduced 100 times the diffraction limit. Results are compared to expected performance.

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Jacob H. Wirth, Abbie T. Watnik, and Grover A. Swartzlander "Computational imaging for reducing peak irradiance on focal planes", Proc. SPIE 10669, Computational Imaging III, 106690U (12 June 2018); https://doi.org/10.1117/12.2304702

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