Quantized fraction Fresnel zone plate for increasing propagation distance of directed radiation beams

Wenmin Shi; Pin Long; Dahsiung Hsu

doi:10.1117/12.138901

13 January 1993 Quantized fraction Fresnel zone plate for increasing propagation distance of directed radiation beams

Wenmin Shi, Pin Long, Dahsiung Hsu

Author Affiliations +

Proceedings Volume 1751, Miniature and Micro-Optics: Fabrication and System Applications II; (1993) https://doi.org/10.1117/12.138901
Event: San Diego '92, 1992, San Diego, CA, United States

Abstract

This paper presents a proposed application of the quantized fraction Fresnel zone plate (QF- FZP), a binary optics element, for increasing propagation distance of directed radiation beams. The design procedure and formula of QF-FZPs based on the vibration vector method are presented. If a QF-FZP of four quantized phase levels is used, the propagation distance of directed radiation beams can be prolonged 1.5 times further while the incident radiation beam maintains the same intensity. Finally, Fresnel-Kirchhoff diffraction theory is used for analyzing the axial intensity distribution of directed radiation beams diffracted by QF-FZPs.

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Wenmin Shi, Pin Long, and Dahsiung Hsu "Quantized fraction Fresnel zone plate for increasing propagation distance of directed radiation beams", Proc. SPIE 1751, Miniature and Micro-Optics: Fabrication and System Applications II, (13 January 1993); https://doi.org/10.1117/12.138901

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