Interband nonlinearity in aluminum-doped zinc oxide epsilon-near-zero metamaterial

Lyuba Kuznetsova; Trang Bao Minh Tran

doi:10.1117/12.2677193

4 October 2023 Interband nonlinearity in aluminum-doped zinc oxide epsilon-near-zero metamaterial

Proceedings Volume 12647, Active Photonic Platforms (APP) 2023; 126470E (2023) https://doi.org/10.1117/12.2677193
Event: SPIE Nanoscience + Engineering, 2023, San Diego, California, United States

Abstract

The FDTD numerical simulations are used to investigate the time evolution of the two-level system of conduction and valence bands. Free carriers’ population dynamics in the conduction band for large intensities of the ultrashort pulse (100 fs) is calculated. The results show that time-dependent real part of the optical permittivity at ENZ spectral point is saturated and resembles a step function as the ultrashort pulse amplitude reaches ~10¹⁰ V/m. The calculated value of the intensity-dependent refractive index is n₂~-2×10^-11 cm²/W. The results demonstrate that increasing initial carrier concentration from ~2×10²⁰cm^-3 to ~4×10²⁰cm^-3 leads to a significant n₂ magnitude change.

Conference Presentation

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Lyuba Kuznetsova and Trang Bao Minh Tran "Interband nonlinearity in aluminum-doped zinc oxide epsilon-near-zero metamaterial", Proc. SPIE 12647, Active Photonic Platforms (APP) 2023, 126470E (4 October 2023); https://doi.org/10.1117/12.2677193

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