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Proceedings Paper

Femtosecond laser direct writing of volume Fresnel zone plates
Author(s): Pornsak Srisungsitthisunti; Okan K. Ersoy; Xianfan Xu
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Paper Abstract

We describe a method of using femtosecond laser for direct writing of volume Fresnel zone plates with high diffraction efficiency. A volume zone plate consists of a number of Fresnel zone plate layers designed to focus light coherently to a single spot. We fabricated both low numerical aperture (NA) and high NA volume zone plates, resulting in a significant increase in overall diffraction efficiency. The performance of the volume zone plate is also simulated using the Hankel transform beam propagation method (Hankel BPM). The results show an excellent agreement with the scalar diffraction theory and the experimental results. The numerical method allows more comprehensive studies of the VFZP parameters to achieve higher diffraction efficiency.

Paper Details

Date Published: 17 February 2010
PDF: 10 pages
Proc. SPIE 7584, Laser Applications in Microelectronic and Optoelectronic Manufacturing XV, 75840V (17 February 2010); doi: 10.1117/12.846588
Show Author Affiliations
Pornsak Srisungsitthisunti, Purdue Univ. (United States)
Okan K. Ersoy, Purdue Univ. (United States)
Xianfan Xu, Purdue Univ. (United States)


Published in SPIE Proceedings Vol. 7584:
Laser Applications in Microelectronic and Optoelectronic Manufacturing XV
Hiroyuki Niino; Michel Meunier; Bo Gu; Guido Hennig; Jan J. Dubowski, Editor(s)

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