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Optical Engineering

Design method to enhance the transmittance of a structured lens based on nonperiodic sampling
Author(s): Yifu Wang; Xiaochun Dong; Guishan Yuan; Guoxing Zheng; Chunlei Du
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Paper Abstract

On the basis of the work of Chen, Zhou, Luo, and Du [Opt. Lett. 33, 753-755 (2008)], we propose a new method using nonperiodic sampling to design a high-transmittance structured lens. The sizes of the holes are decided by the phase requirements, and the holes are arranged with a fixed interval in the vertical direction while a variable interval in the horizontal direction. With this design method, holes can be arranged more compactly and the fill factor of the holes can be increased effectively. Numerical simulation is performed through the finite-difference time-domain method, and the results indicate that the transmittance of the lens climbs to 73.6%, which reaches almost 3.5 times that achieved in the above-mentioned work. Meanwhile, the simulated focal length agrees well with the theoretical design result with the error of 1.1% and the full width at half maximum of the focal spot is obtained ∼1.16 times of the diffraction limit.

Paper Details

Date Published: 1 January 2011
PDF: 5 pages
Opt. Eng. 50(1) 018001 doi: 10.1117/1.3528539
Published in: Optical Engineering Volume 50, Issue 1
Show Author Affiliations
Yifu Wang, Institute of Optics and Electronics (China)
Xiaochun Dong, Institute of Optics and Electronics (China)
Guishan Yuan, Institute of Optics and Electronics (China)
Guoxing Zheng, Wuhan Univ. (China)
Chunlei Du, Institute of Optics and Electronics (China)

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