• Corpus ID: 118360293

Planar Lenses at Visible Wavelengths

  title={Planar Lenses at Visible Wavelengths},
  author={Mohammadreza Khorasaninejad and Wei Ting Chen and Robert C Devlin and Jaewon Oh and Alexander Y. Zhu and Federico Capasso},
  journal={arXiv: Optics},
Sub-wavelength resolution imaging requires high numerical aperture (NA) lenses, which are bulky and expensive. Metasurfaces allow the miniaturization of conventional refractive optics into planar structures. We show that high-aspect-ratio titanium dioxide metasurfaces can be fabricated and designed as meta-lenses with NA = 0.8. Diffraction-limited focusing is demonstrated at wavelengths of 405 nm, 532 nm, and 660 nm with corresponding efficiencies of 86%, 73%, and 66%. The meta-lenses can… 

Figures from this paper

Achromatic metalens based on coordinative modulation of propagation phase and geometric phase

Metalens is considered as one of the most promising planar optical devices composed of the metasurface, but it is usually difficult to realize full-color imaging and display due to the narrow working

In Situ Planarization of Huygens Metasurfaces by Nanoscale Local Oxidation of Silicon

Metasurfaces are becoming a flourishing field of research, with diverse applications, such as planar optical components and structural colors. While metallic metasurfaces are typically few tens of



Achromatic Metasurface Lens at Telecommunication Wavelengths.

An aperiodic array of coupled dielectric nanoresonators is utilized to demonstrate a multiwavelength achromatic lens and are an essential step toward a realization of broadband flat optical elements.

High efficiency dielectric metasurfaces at visible wavelengths

Metasurfaces are planar optical elements that hold promise for overcoming the limitations of refractive and conventional diffractive optics 1-3 . Dielectric metasurfaces demonstrated thus far 4-10

Multiwavelength achromatic metasurfaces by dispersive phase compensation

It is shown that chromatic dispersion, or color dependence, can be compensated for by the judicious design of the surface, and an engineered wavelength-dependent phase shift imparted by a metasurface is demonstrated.

Broadband high-efficiency dielectric metasurfaces for the visible spectrum

The results presented here provide an important advance for realizing optical components at visible wavelengths—e.g., lenses, holograms, and phase shifters—with orders of magnitude reduction in thickness compared with traditional refractive optics.

A super-oscillatory lens optical microscope for subwavelength imaging.

A new super-resolution microscope for optical imaging that beats the diffraction limit of conventional instruments and the recently demonstrated near-field optical superlens and hyperlens is reported.

Aberration-free ultrathin flat lenses and axicons at telecom wavelengths based on plasmonic metasurfaces.

The concept of optical phase discontinuities is applied to the design and demonstration of aberration-free planar lenses and axicons, comprising a phased array of ultrathin subwavelength-spaced

Dielectric gradient metasurface optical elements

The experimental realization and operation of dielectric gradient metasurface optical elements capable of also achieving high efficiencies in transmission mode in the visible spectrum are described.

Efficient polarization beam splitter pixels based on a dielectric metasurface

The polarization dependence of the reflection, refraction, and diffraction of electromagnetic waves from materials is measured in applications that extend from small (e.g., ellipsometry of

Broadband Multifunctional Efficient Meta-Gratings Based on Dielectric Waveguide Phase Shifters.

This work introduces metasurfaces which use dielectric ridge waveguides (DRWs) as phase shift elements in which the required phase accumulation is achieved via propagation over a subwavelength distance.

High-contrast gratings as a new platform for integrated optoelectronics

  • C. Chang-Hasnain
  • Physics
    22nd IEEE International Semiconductor Laser Conference
  • 2010
A new concept of dielectric subwavelength grating has emerged. This grating leverages a high contrast in refractive indices for the grating medium and its surroundings. We will discuss how