Accelerated autofocusing of off-axis holograms using critical sampling

Fatih Toy M. F., Kühn J., Richard S., Parent J., Egli M., Depeursinge C.

Optics Letters, cilt.37, sa.24, ss.5094-5096, 2012 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 37 Sayı: 24
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1364/ol.37.005094
  • Dergi Adı: Optics Letters
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.5094-5096
  • İstanbul Medipol Üniversitesi Adresli: Hayır

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 12× 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. © 2012 Optical Society of America.