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Optical resolution and the duality of light
KTH, School of Industrial Engineering and Management (ITM), Production Engineering, Metrology and Optics.
2008 (English)In: Applied Optics, ISSN 0003-6935, E-ISSN 1539-4522, Vol. 47, no 19, D1-D5 p.Article in journal (Refereed) Published
Abstract [en]

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 0.01X, whereas the diffraction-limited resolution is only of the order of 0.5X. 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 at so indicate that information does not necessarily decrease with distance.

Place, publisher, year, edition, pages
2008. Vol. 47, no 19, D1-D5 p.
Keyword [en]
CCD detectors, Diffraction-limited resolution, Fourier transformations, Limited resolution, Optical resolution, Optical-, Order-of magnitudes, Resolution limits, Charge coupled devices, Data recording, Fourier analysis, Fourier transforms, Holographic interferometry, Image processing, Image reconstruction, Laser recording, Light, Optical systems, Photonics
National Category
Atom and Molecular Physics and Optics
URN: urn:nbn:se:kth:diva-33085DOI: 10.1364/AO.47.0000D1ISI: 000257942600002ScopusID: 2-s2.0-51949093425OAI: diva2:415403
QC 20110506Available from: 2011-05-06 Created: 2011-04-28 Last updated: 2011-05-06Bibliographically approved

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