Design of all-dielectric high NA mid infra-red metalens using  inverse design and  topology optimization

Abdallah Maher; Mohamed A. Swillam

doi:10.1117/12.2665691

6 June 2023 Design of all-dielectric high NA mid infra-red metalens using inverse design and topology optimization

Abdallah Maher, Mohamed A. Swillam

Proceedings Volume 12568, Metamaterials XIV; 1256817 (2023) https://doi.org/10.1117/12.2665691
Event: SPIE Optics + Optoelectronics, 2023, Prague, Czech Republic

Conference Poster

Abstract

In this paper we demonstrate a high numerical aperture (NA) mid Infra-red (MIR) meta-lens with high focusing efficiency in band (2μm - 3μm) based on inverse design with topology optimization. We reformulate the optimization problem to benefit multi-wavelengths using maximal mini formulation. The meta-surfaces based on all-doped titanium dioxide (TIO2). The designed meta-lens based on this inverse design methodology produces a maximum focusing efficiency 93.71%, an average focusing efficiency 75.66%, a maximum full width half maximum (FWHM) 2.2μm and an average FWHM 1.8µm, and all these results laying under very high numerical aperture condition 0.8.

Citation Download Citation

Abdallah Maher and Mohamed A. Swillam "Design of all-dielectric high NA mid infra-red metalens using inverse design and topology optimization", Proc. SPIE 12568, Metamaterials XIV, 1256817 (6 June 2023); https://doi.org/10.1117/12.2665691

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available