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Independent Bifocal Metalens Design Based on Deep Learning Algebra
- Source :
- IEEE Photonics Technology Letters. 33:403-406
- Publication Year :
- 2021
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2021.
-
Abstract
- We present a single-layer, transmissive metalens for focusing the orthogonal polarization components of incident light to two independent focal spots without affecting the initial orthogonal polarization states. To produce the required phase profile, the cross-shaped nanorod, as the unit cell of the metalens, is developed to support arbitrary combinations of two independent phase shifts (0- $2\pi$ ) of transverse electric and transverse magnetic polarized light. A deep neural network is trained to generate the design parameters of each unit cell efficiently and accurately. The metalens is simulated with finite-difference time-domain method and good agreements are observed comparing with theoretical prediction. This work provides a new solution to multi-foci metalens and polarization beam splitter and may find potential applications in deep sensing, holography, information encryption and display.
- Subjects :
- Physics
Artificial neural network
business.industry
Orthogonal polarization spectral imaging
Phase (waves)
Finite difference method
Holography
Optical polarization
Ray
Atomic and Molecular Physics, and Optics
Electronic, Optical and Magnetic Materials
law.invention
Transverse plane
Optics
law
Electrical and Electronic Engineering
business
Subjects
Details
- ISSN :
- 19410174 and 10411135
- Volume :
- 33
- Database :
- OpenAIRE
- Journal :
- IEEE Photonics Technology Letters
- Accession number :
- edsair.doi...........d58c1e1d11d3f2c5ec49a008a581c614