Superresolution optical system with two fixed generalized Damman gratings

Eran Sabo, Zeev Zalevsky, David Mendlovic, Naim Konforti, Irena Kiryuschev

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


We present a system that exceeds the Rayleigh limit of resolution, by placing two fixed gratings in predetermined positions. Lukosz suggested a setup that managed to exceed the Rayleigh limit of resolution [J. Opt. Soc. Am. 56, 1463 (1966); 57, 932 (1967)]. However, Lukosz's technique had some drawbacks that the new suggested system attempts to resolve. Similar to Lukosz's technique, the proposed system works without any moving elements and with no time-or wavelength-restricting conditions. It is suitable for coherent or incoherent two-dimensional imaging. However, the new system contains some important modifications. Although the system uses only two gratings, it is capable of producing superresolution without using an additional imaging lens at the output plane. The generalized Damman gratings allow for obtaining undistorted spectral restoration of information. To achieve superresolution, the input object is duplicated. The trade-off for higher resolution is a smaller field of view. Experimental results validate the theoretical analysis.

Original languageEnglish
Pages (from-to)5318-5325
Number of pages8
JournalApplied Optics
Issue number29
StatePublished - 10 Oct 2000
Externally publishedYes


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