Journal
LIGHT-SCIENCE & APPLICATIONS
Volume 6, Issue -, Pages -Publisher
CHINESE ACAD SCIENCES, CHANGCHUN INST OPTICS FINE MECHANICS AND PHYSICS
DOI: 10.1038/lsa.2017.36
Keywords
achromatic; super-oscillation; super-resolution
Categories
Funding
- Agency for Science, Technology and Research (A*STAR) of Singapore [122-360-0009]
- Singapore Ministry of Education [MOE2011-T3-1-005]
- Engineering and Physical Sciences Research Council UK [EP/F040644/1, EP/M009122/1]
- University of Southampton Enterprise Fund
Ask authors/readers for more resources
Lenses are crucial to light-enabled technologies. Conventional lenses have been perfected to achieve near-diffraction-limited resolution and minimal chromatic aberrations. However, such lenses are bulky and cannot focus light into a hotspot smaller than a half-wavelength of light. Pupil filters, initially suggested by Toraldo di Francia, can overcome the resolution constraints of conventional lenses but are not intrinsically chromatically corrected. Here we report single-element planar lenses that not only deliver sub-wavelength focusing, thus beating the diffraction limit of conventional refractive lenses, but also focus light of different colors into the same hotspot. Using the principle of super-oscillations, we designed and fabricated a range of binary dielectric and metallic lenses for visible and infrared parts of the spectrum that are manufactured on silicon wafers, silica substrates and optical fiber tips. Such low-cost, compact lenses could be useful in mobile devices, data storage, surveillance, robotics, space applications, imaging, manufacturing with light and spatially resolved nonlinear microscopies.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available