Optical Design and Engineering

Designing continuous-phase super-resolving filters by differential evolution and conjugate gradient method

[+] Author Affiliations
Hongtao Gao, Wei Yan

Institute of Optics and Electronics, Chinese Academy of Sciences, State Key Laboratory of Optical Technologies for Microfabrication, ChengDu 610209, China

Song Hu, Yudong Zhang

Institute of Optics and Electronics, Chinese Academy of Sciences, ChengDu 610209, China

Opt. Eng. 55(12), 125108 (Dec 28, 2016). doi:10.1117/1.OE.55.12.125108
History: Received August 30, 2016; Accepted November 21, 2016
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Abstract.  A method for designing a class of phase-only super-resolving filters with continuous-phase that can be described by a sum of Zernike polynomials with weight coefficients is presented. With the use of the global search algorithm, differential evolution method, and the local search algorithm, the conjugate gradient method, three filters were designed as examples. The main-lobe size of the point spread function of the three filters can be reduced, keeping allowable central intensity and sidelobe intensity for some typical applications. This type of filter has the advantage of lower scatter compared with other phase-only filters composed of discontinuous phase. In particular, such filters can be implemented dynamically by a phase-controlling device.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Hongtao Gao ; Song Hu ; Yudong Zhang and Wei Yan
"Designing continuous-phase super-resolving filters by differential evolution and conjugate gradient method", Opt. Eng. 55(12), 125108 (Dec 28, 2016). ; http://dx.doi.org/10.1117/1.OE.55.12.125108


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