Projects per year
Abstract
We present a stand-alone beam-focusing flat lens for use in the telecommunications wavelength range. Light incident on the back surface of the lens propagates through a subwavelength aperture and is heavily diffracted on exit and partially couples into a surface plasmon polariton and a surface wave propagating along the surface of the lens. Interference between the diffracted wave and re-emission from a grating patterned on the surface produces a highly collimated beam. We show for the first time a geometry at which a lens of this type can be used at telecommunication wavelengths (lambda = 1.55 mu m) and identify the light coupling and re-emission mechanisms involved. Measured beam profile results at varying incident wavelengths show excellent agreement with Lumerical FDTD simulation results. (C) 2014 Optical Society of America
Original language | English |
---|---|
Pages (from-to) | 3786-3789 |
Number of pages | 4 |
Journal | Optics Letters |
Volume | 39 |
Issue number | 13 |
DOIs | |
Publication status | Published - 1 Jul 2014 |
Research Groups and Themes
- QETLabs
- Photonics and Quantum
Keywords
- LASERS
- LIGHT
Fingerprint
Dive into the research topics of 'Slot-grating flat lens for telecom wavelengths'. Together they form a unique fingerprint.Projects
- 1 Finished
-
Integrated Tunable Flat Lenses (TuneFuL)
Cryan, M. J. (Principal Investigator)
17/05/12 → 17/05/15
Project: Research
Profiles
-
Professor Martin J Cryan
- School of Electrical, Electronic and Mechanical Engineering - Professor of Applied Electromagnetics and Photonics
- Cabot Institute for the Environment
- Communication Systems and Networks
Person: Academic , Member