Modeling nanoscale V-shaped antennas for the design of optical phased arrays

Blanchard, Romain; Aoust, Guillaume; Genevet, Patrice; Yu, Nanfang; Kats, Mikhail A.; Gaburro, Z.; Capasso, Federico

doi:10.1103/physrevb.85.155457

Cited by 104 publications

(68 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Importantly, due to the involvement of two strongly coupled arms, the V-shaped antennas could offer larger scattering amplitudes in comparison with simple rectangular rod. [ 30,31 ] By spatially positioning these particles, various functionalities have been achieved. [ 7,8,12,14,18 ] Similar functionalities were accomplished via Babinet-inverted V-shaped nanoapertures perforated in gold fi lms, which have even better signal-to-noise ratio (SNR) by blocking the copolarized component.…”

Section: Phase Discontinuity Arising From Hybrid Modementioning

confidence: 99%

Advances in Full Control of Electromagnetic Waves with Metasurfaces

Zhang

Mei

Huang

et al. 2016

Advanced Optical Materials

357

199

View full text Add to dashboard Cite

Metasurfaces, two‐dimensional versions of metamaterials, retain the great capabilities of three‐dimensional counterparts in manipulating electromagnetic wave behaviors, while reducing the challenges in fabrication. By judiciously engineering parameters of individual building blocks (such as geometry, size, and material) and selecting specific design algorithms, metasurfaces are promising to replace conventional electromagnetic elements in nanoplasmonic/photonic devices. Significantly, such concept can be readily promoted to other disciplines, such as acoustics, thermal physics, and seismology. In this article, the latest advances in full control of electromagnetic waves with metasurfaces are briefly reviewed from a functionality perspective. A broad avenue towards real‐life applications of metamaterials has been opened up, although they are still at their infant stage. At the end, several promising approaches are suggested to extend the applications of metasurfaces.

show abstract

Section: Phase Discontinuity Arising From Hybrid Modementioning

confidence: 99%

Advances in Full Control of Electromagnetic Waves with Metasurfaces

Zhang

Mei

Huang

et al. 2016

Advanced Optical Materials

357

199

View full text Add to dashboard Cite

show abstract

“…The emission of our antennas can be well approximately by that of electric dipoles [28,29]. We can calculate the intensity of the field (|E| 2 In Fig 4, we present the calculated and the measured intensity profiles in the transverse direction for the three devices.…”

mentioning

confidence: 95%

Aberration-Free Ultrathin Flat Lenses and Axicons at Telecom Wavelengths Based on Plasmonic Metasurfaces

et al. 2012

Self Cite

View full text Add to dashboard Cite

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 optical antennas. The lenses and axicons consist of radial distributions of V--shaped nanoantennas that generate respectively spherical wavefronts and non--diffracting Bessel beams at telecom wavelengths.Simulations are also presented to show that our aberration--free designs are applicable to high numerical aperture lenses such as flat microscope objectives.The fabrication of lenses with aberration correction is challenging in particular in the mid--and near--infrared wavelength range where the choice of transparent materials is limited.Usually it requires complex optimization techniques such as aspheric shapes or multi--lens designs [1,2], which are expensive and bulky.Focusing diffracting plates offer the possibility of designing low weight and small volume lenses. For example the Fresnel Zone Plate focuses light by diffracting from a binary mask that blocks part of the radiation [1]. A more advanced solution is represented by the Fresnel lens, which introduces a gradual phase retardation in the radial direction to focus light

show abstract

“…Wavelength The relationship between the phase profile of the nanoantennas Φ and its location center coordinate x is shown in Eq. (1) [9,11,12]:…”

Section: Methodsmentioning

confidence: 99%