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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 47, Iss. 19 — Jul. 1, 2008
  • pp: D1–D5

Optical resolution and the duality of light

Nils H. Abramson  »View Author Affiliations

Applied Optics, Vol. 47, Issue 19, pp. D1-D5 (2008)

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For 15 years, lensless microscopes have been constructed based on the use of holography, a digital CCD detector, and a computer for image reconstruction by use of, e.g., Fourier transformation. Thus, no lens is involved and therefore the conventional resolution limit of half the wavelength no longer applies. Instead of being limited by the wavelength, the resolution is in this case limited by how exact one can measure the phases of the light. It is remarkable that the interference-limited resolution is approximately 0.01λ, whereas the diffraction-limited resolution is only of the order of 0.5λ. It is my hope that by combining these two techniques it will be possible to increase the magnification in optical systems by at least an order of magnitude. The calculations also indicate that information does not necessarily decrease with distance.

© 2008 Optical Society of America

OCIS Codes
(080.0080) Geometric optics : Geometric optics
(090.0090) Holography : Holography
(100.0100) Image processing : Image processing
(100.2000) Image processing : Digital image processing
(180.0180) Microscopy : Microscopy
(090.1995) Holography : Digital holography

Original Manuscript: September 5, 2007
Revised Manuscript: October 23, 2007
Manuscript Accepted: October 29, 2007
Published: January 8, 2008

Virtual Issues
Vol. 3, Iss. 8 Virtual Journal for Biomedical Optics

Nils H. Abramson, "Optical resolution and the duality of light," Appl. Opt. 47, D1-D5 (2008)

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