Scientific Results

Multi-imaging capabilities of a 2D diffraction grating in combination with digital holography

Year: 2010

Authors: Paturzo M., Merola F., Ferraro P.

Autors Affiliation: CNR – Istituto Nazionale di Ottica, Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy

Abstract: In this Letter we report on an alternative approach to get multiple images in microscopy, exploiting the capabilities of both a lithium niobate diffraction grating and digital holographic technique. We demonstrate that multi-imaging can be achieved in a lensless configuration by using a hexagonal diffraction grating but overcoming, thanks to digital holography (DH), the many constrains imposed by the grating parameters in multi-imaging with Talbot effect or Talbot array illuminators. In fact, DH permits the numerical reconstruction of the optical field diffracted by the grating, thus obtaining in-focus multiple images in a plane different from the fractional or entire Talbot ones. (C) 2010 Optical Society of America

Journal/Review: OPTICS LETTERS

Volume: 35 (7)      Pages from: 1010  to: 1012

More Information: Research was funded from the European Community
DOI: 10.1364/OL.35.001010

Citations: 9
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English