Ultralow sidelobe midinfrared optical phased array based on a broadband metasurface
- 6 October 2021
- journal article
- research article
- Published by Optica Publishing Group in Applied Optics
- Vol. 60 (29), 9122-9128
- https://doi.org/10.1364/ao.437874
Abstract
In this paper, we propose an all-solid-state and ultralow sidelobe optical phased array (OPA) through designing a broadband angle-insensitive reflective metasurface in the midinfrared. The simulation results show that the metasurface can realize the wide-frequency metareflection characteristics in the range of 4.3 ∼ 5.0 µ m . Notably, the metasurface array can almost generate a continuous sweep between 0° and 342°, while the variation of reflectivity amplitude is only 10.2%, by changing the corresponding structural parameters. Then, we design and simulate an OPA based on these excellent characteristics of the broadband metasurface. By simply changing the periodicity of the OPA structure, the continuous deflection angles can be achieved within 29.41°, which can increase to 44.06° by changing the angle of the incident beam. A key feature of our design is that the sidelobe energy is less than 3.10% of the main lobe energy.Funding Information
- National Natural Science Foundation of China (61775048)
- Shenzhen Fundamental Research Program (JCYJ2020109150808037)
- National Key Scientific Instrument and Equipment Development Projects of China (62027823)
This publication has 40 references indexed in Scilit:
- Broadband metasurface for independent control of reflected amplitude and phaseAIP Advances, 2016
- High‐transmission dielectric metasurface with 2π phase control at visible wavelengthsLaser & Photonics Reviews, 2015
- Widely-tunable mid-infrared fiber-coupled quartz-enhanced photoacoustic sensor for environmental monitoringOptics Express, 2014
- Broadband Metasurfaces with Simultaneous Control of Phase and AmplitudeAdvanced Materials, 2014
- Large-Scale Silicon Photonic Circuits for Optical Phased ArraysIEEE Journal of Selected Topics in Quantum Electronics, 2013
- Active impedance metasurface with full 360° reflection phase tuningScientific Reports, 2013
- Large-scale nanophotonic phased arrayNature, 2013
- Near- and mid-infrared laser monitoring of industrial processes, environment and security applicationsOptics and Lasers in Engineering, 2006
- Phased array of phased arrays (PAPA) laser systems architecturePublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Optical properties of the metals Al, Co, Cu, Au, Fe, Pb, Ni, Pd, Pt, Ag, Ti, and W in the infrared and far infraredApplied Optics, 1983