Share Email Print
cover

Proceedings Paper

Micron-scale light structuring via flat nanodevices
Author(s): Nasir Mahmood; Muhammad Qasim Mehmood; Inki Kim; Heongyeong Jeong; Farooq Ahmad Tahir; Junsuk Rho
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Miniaturized devices with multiple functionalities are exceedingly required in integrated optical systems. Flat nanostructures, named metasurfaces, provide fascinating boulevard for complex structuring and manipulation of light such as optical vortex generation, lensing, imaging, harmonic generation etc. at micron scale. Since, the performance of metal-based plasmonic metasurfaces is significantly limited by their optical absorption and losses, lossless dielectric materials (in the operational spectrum) provide decent alternative to attain higher efficiency. Here, a novel, polarization insensitive and highly efficient method for light structuring is demonstrated based on amorphous silicon (with subwavelength thickness of 400 nm) at an operational wavelength of 633 nm. The proposed phase gradient metasurface is based on circular cylindrical nanopillars of amorphous silicon exhibits two optical properties, the lensing and orbital angular momentum generation. The cylindrical nature of the pillar plays a pivotal role to make the overall structure as polarization insensitive. The proposed innovative methodology will provide an interesting road towards the development and realization of multi-functional ultrathin nanodevices which will find numerous applications in integrated photonics.

Paper Details

Date Published: 7 May 2018
PDF: 6 pages
Proc. SPIE 10671, Metamaterials XI, 1067126 (7 May 2018); doi: 10.1117/12.2314411
Show Author Affiliations
Nasir Mahmood, National Univ. of Sciences and Technology (Pakistan)
Information Technology Univ. of the Punjab (Pakistan)
The Univ. of Lahore (Pakistan)
Muhammad Qasim Mehmood, Information Technology Univ. of the Punjab (Pakistan)
National Univ. of Sciences and Technology (Pakistan)
Inki Kim, Pohang Univ. of Science and Technology (Korea, Republic of)
Heongyeong Jeong, Pohang Univ. of Science and Technology (Korea, Republic of)
Farooq Ahmad Tahir, National Univ. of Sciences and Technology (Pakistan)
Junsuk Rho, Pohang Univ. of Science and Technology (Korea, Republic of)
The Univ. of Lahore (Pakistan)


Published in SPIE Proceedings Vol. 10671:
Metamaterials XI
Allan D. Boardman; Anatoly V. Zayats; Kevin F. MacDonald, Editor(s)

© SPIE. Terms of Use
Back to Top