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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 24, Iss. 12 — Jun. 15, 1999
  • pp: 811–813

Confocal microscopy with a volume holographic filter

George Barbastathis, Michal Balberg, and David J. Brady  »View Author Affiliations


Optics Letters, Vol. 24, Issue 12, pp. 811-813 (1999)
http://dx.doi.org/10.1364/OL.24.000811


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Abstract

We describe a modified confocal microscope in which depth discrimination results from matched filtering by a volume hologram instead of a pinhole filter. The depth resolution depends on the numerical aperture of the objective lens and the thickness of the hologram, and the dynamic range is determined by the diffraction efficiency. We calculate the depth response of the volume holographic confocal microscope, verify it experimentally, and present the scanned image of a silicon wafer with microfabricated surface structures.

© 1999 Optical Society of America

OCIS Codes
(090.7330) Holography : Volume gratings
(110.6880) Imaging systems : Three-dimensional image acquisition
(180.1790) Microscopy : Confocal microscopy

Citation
George Barbastathis, Michal Balberg, and David J. Brady, "Confocal microscopy with a volume holographic filter," Opt. Lett. 24, 811-813 (1999)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-24-12-811

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