Fast method of speckle suppression for reflection phase microscopy

Photonic Letters of Poland 2018 | 10(4) | 118

Patrycjusz Stremplewski, Maciej Nowakowski, Dawid Borycki, Maciej Wojtkowski


Light propagating in a turbid medium is randomly altered by optical inhomogeneities, which not only change the momentum and polarization of light but also generate a speckle pattern. All these effects strongly limit the capabilities of laser based, quantitative phase–sensitive optical biomedical imaging modalities by hindering the reconstruction of phase distribution. Here we introduce the method of rapid incident light modulation, which allows to suppress speckle noise and preserve spatial phase distribution. We implement this approach in the full-field Michelson interferometer, where incident light is modulated using a digital micromirror device (DMD).

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This project has received funding from the European Union’s
Horizon 2020 research and innovation programme
under grant agreement No 666295.