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Optics Letters

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  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 19 — Oct. 1, 2006
  • pp: 2855–2857

Resolution of 90 nm ( λ 5 ) in an optical transmission microscope with an annular condenser

Arnold Vainrub, Oleg Pustovyy, and Vitaly Vodyanoy  »View Author Affiliations


Optics Letters, Vol. 31, Issue 19, pp. 2855-2857 (2006)
http://dx.doi.org/10.1364/OL.31.002855


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Abstract

Resolution of 90 nm was achieved with a research microscope simply by replacing the standard bright-field condenser with a homebuilt illumination system with a cardioid annular condenser. Diffraction gratings with 100 nm width lines as well as less than 100 nm size features of different-shaped objects were clearly visible on a calibrated microscope test slide. The resolution increase results from a known narrower diffraction pattern in coherent illumination for the annular aperture compared with the circular aperture. This explanation is supported by an excellent accord of calculated and measured diffraction patterns for a 50 nm radius disk.

© 2006 Optical Society of America

OCIS Codes
(050.1940) Diffraction and gratings : Diffraction
(100.6640) Image processing : Superresolution
(110.1220) Imaging systems : Apertures
(170.0180) Medical optics and biotechnology : Microscopy

ToC Category:
Imaging Systems

History
Original Manuscript: June 12, 2006
Manuscript Accepted: July 18, 2006
Published: September 11, 2006

Virtual Issues
Vol. 1, Iss. 11 Virtual Journal for Biomedical Optics

Citation
Arnold Vainrub, Oleg Pustovyy, and Vitaly Vodyanoy, "Resolution of 90 nm (λ/5) in an optical transmission microscope with an annular condenser," Opt. Lett. 31, 2855-2857 (2006)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-19-2855


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References

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