Optimization-free superoscillatory lens using phase and amplitude masks

Huang Kun; Ye Huapeng; Teng Jinghua; Yeo Swee Ping; Luk'yanchuk Boris; Qiu Cheng-Wei;

Optimization-free superoscillatory lens using phase and amplitude masks

ABSTRACT

A superoscillatory focusing lens has been experimentally demonstrated by optimizing Fresnel zone plates (FZP), with limited physical insight as to how the lens feature contributes to the focal formation. It is therefore imperative to establish a generalized viable account for both FZP (amplitude mask) and binary optics (phase mask). Arbitrary superoscillatory spots can now be customized and realized by a realistic optical device, without using optimization. It is counterintuitively found that high spatial frequency with small amplitude and destructive interference are favorable in superfocusing of a superoscillation pattern. The inevitably high sidelobe is pushed 15 away from the central subwavelength spot, resulting in significantly enlarged field of view for viable imaging applications. This work therefore not only reveals the explicit physical role of any given metallic/dielectric rings but also provides an alternative design roadmap of superresolution imaging. The robust method is readily applicable in superthin longitudinally polarized needle light, quantum physics and information theory.


Language English
Journal Laser & photonics reviews
Year
2013
Pages 152-157
Volume 8
Issue number
1
Status published


KEYWORDS

Binary phase mask; Fresnel zone plate; superoscillation; subwavelength imaging; nanostructure


DOI: 10.1002/lpor.201300123

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  • APA
Kun Huang, Huapeng Ye, Jinghua Teng, Yeo Swee Ping, Luk'yanchuk Boris, Qiu Cheng-Wei. Optimization-free superoscillatory lens using phase and amplitude masks. Laser & photonics reviews, 2013, 8(1), 152-157.

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