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Optica Publishing Group
  • Journal of Display Technology
  • Vol. 7,
  • Issue 1,
  • pp. 24-28
  • (2011)

Simultaneous Multiplane Imaging in Digital Holographic Microscopy

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Abstract

Reduced depth of field is a severe limitation in microscopy since, at high magnification, only a portion of the imaged volume along the optical axis is in good focus at once. We demonstrate that, adopting a numerical quadratic deformed diffraction grating into the reconstruction process of digital holograms, it is possible to image three planes at different depths simultaneously, gaining flexibility dispensing with a physical grating. Moreover, multiplexed holograms recorded with two different wavelengths can be obtained in focus simultaneously by a single reconstruction. Description of the method and applications for macroscopic and microscopic biological samples are reported.

© 2011 IEEE

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