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Quality assessment of combined quantization-shot-noise-induced decorrelation noise in high-speed digital holographic metrology

Abstract : This paper discusses on the influence of decorrelation noise induced by quantization and shot-noise when recording digital holograms at very high frame rate. A criterion based on the coherence factor of the hologram phase difference is proposed. The main parameters of interest are the ratio between the reference and the object waves and the sensor dynamics, depending on the photo-electron capacity of pixels. The study is based on a full numerical simulation of the holographic process, which provides useful rules. This leads to define the optimal conditions for recording at very-high frame rate with minimization of the decorrelation noise. Experimental results obtained with frame rate at 50kHz confirm the proposed approach.
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https://hal.archives-ouvertes.fr/hal-02403176
Contributeur : Pascal Picart <>
Soumis le : mardi 10 décembre 2019 - 17:50:17
Dernière modification le : jeudi 18 mars 2021 - 15:28:55

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Julien Poittevin, Pascal Picart, François Gautier, Charles Pezerat. Quality assessment of combined quantization-shot-noise-induced decorrelation noise in high-speed digital holographic metrology. Optics Express, Optical Society of America - OSA Publishing, 2015, 23 (24), pp.30917. ⟨10.1364/OE.23.030917⟩. ⟨hal-02403176⟩

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