Spiral diffractive optical elements

Zbigniew Jaroszewicz; Andrzej Kolodziejczyk

doi:10.1117/12.190231

12 October 1994 Spiral diffractive optical elements

Zbigniew Jaroszewicz, Andrzej Kolodziejczyk

Proceedings Volume 2169, Nonconventional Optical Imaging Elements; (1994) https://doi.org/10.1117/12.190231
Event: International Colloquium on Nonconventional Optical Imaging Elements, 1993, Rydzyna-Rokosowo, Poland

Abstract

Conventional diffractive optical elements with symmetry of revolution like spherical zone plate or axicons are modified by an addition of linear phase change n(theta) along the angular coordinate, where n is a natural number. In consequence of such manipulation the zone borders convert from circles into spirals and the elements modified in this way exhibit a dark dip in the center of the intensity distributions of their diffraction fields, in some cases (e.g. for n equals 1) smaller than the position of the first minimum of the respective distribution of the conventional case. The new family of elements is illustrated by examples of a spiral zone plate as well as spiral linear and logarithmic axicons, and their possible applications in alignment techniques are discussed.

Citation Download Citation

Zbigniew Jaroszewicz and Andrzej Kolodziejczyk "Spiral diffractive optical elements", Proc. SPIE 2169, Nonconventional Optical Imaging Elements, (12 October 1994); https://doi.org/10.1117/12.190231

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