Papers & References

Extending the Imaging Depth of Field through Scattering Media by Wavefront Shaping of Non-Diffraction Beams

PLUTO / PLUTO-2 Spatial Light Modulators
Bessel-/ Airy Beam Generation Imaging/ Image Processing Turbid-/ Opaque Media /Multi Scattering
Published on:
Authors: Han, Tongyu; Peng, Tong; Li, Runze; Wang, Kaige; Sun, Dan & Yao, Baoli
Abstract:
“Increasing the depth of field (DOF) is a crucial issue for imaging through scattering media. In this paper, an improved genetic algorithm is used to modulate the wavefront of light through scattering media, by which high-quality refocusing and imaging through scattering media are achieved. Then, the DOF of the imaging system is effectively extended by further modulating the refocused beam into a non-diffraction beam. Two kinds of non-diffraction beams, i.e., a Bessel beam and Airy beam, were produced as a demonstration. The experimental results show that compared to the Gaussian beam, the DOF of the imaging system by combining the wavefront shaping and non-diffraction Bessel beam or Airy beam can be improved by a factor of 1.1 or 1.5, respectively. The proposed method is helpful for the technical development of high-quality imaging through scattering media with a large DOF.”

Open Access

Publication: Photonics
Issue/Year: Photonics, Volume 10; Number 5; Pages 497; 2023
DOI: 10.3390/photonics10050497
Link: https://doi.org/10.3390/photonics10050497
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