Abstract

We propose truly achromatic metasurfaces at midinfrared and visible spectra using plasmonic and all-dielectric concepts, respectively. The constituting layered elements, with each layer being a capacitive or an inductive structure, behave like low-pass circuit filters with almost linear phase response over the designed spectrum. This allows successful broadband operation. The plasmonic layered elements are limited to work around 50 THz due to the appearance of a plasmonic resonance feature at higher frequencies. On the other hand, the all-dielectric concept can be designed up to the visible range with negligible material dispersion. Design procedures and working principles are fully detailed. Two types of metasurfaces patterned by plasmonic and all-dielectric elements are carefully designed and numerically simulated around 50 and 600 THz, respectively. Chromatic aberration is successfully avoided. The plasmonic metasurface operates well in 5.5–7.5 μm, and the all-dielectric case has the desired performance over almost the entire visible band.

© 2015 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Recent advances in planar optics: from plasmonic to dielectric metasurfaces

Patrice Genevet, Federico Capasso, Francesco Aieta, Mohammadreza Khorasaninejad, and Robert Devlin
Optica 4(1) 139-152 (2017)

Wide-band achromatic flat focusing lens based on all-dielectric subwavelength metasurface

Shaowu Wang, Jianjun Lai, Tao Wu, Changhong Chen, and Junqiang Sun
Opt. Express 25(6) 7121-7130 (2017)

Optical metasurfaces for beam scanning in space

Jierong Cheng and Hossein Mosallaei
Opt. Lett. 39(9) 2719-2722 (2014)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (11)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (3)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription