Accelerated autofocusing of off-axis holograms using critical sampling

M. Fatih Toy, Jonas Kuhn, Stephane Richard, Jerome Parent, Marcel Egli, Christian Depeursinge

Atıf

@article{toy2012accelerated,
  title={Accelerated autofocusing of off-axis holograms using critical sampling},
  author={Toy, M Fatih and K{\"u}hn, Jonas and Richard, St{\'e}phane and Parent, J{\'e}r{\^o}me and Egli, Marcel and Depeursinge, Christian},
  journal={Optics letters},
  volume={37},
  number={24},
  pages={5094--5096},
  year={2012},
  publisher={Optica Publishing Group}
}

Özet

In this letter we propose a fast off-axis hologram autofocusing (AF) approach that is based on the redundant data elimination by the critical resampling of the contained complex field. Implementation of the proposed methodology enables the real-time AF with up to 12x speed-up factors in comparison to the classical approach. The method is further extended for single-shot physical autofocus of the fluorescence imaging channel of multimodal imaging instruments capable of off-axis hologram acquisition.