Giant Nonlinear Circular Dichroism from High Q‐Factor Asymmetric Lithium Niobate Metasurfaces
Abstract
Lithium niobate (LN) is a good nonlinear material with a large second‐order nonlinear polarization coefficient and low optical loss in the UV to mid‐infrared spectral regions. By combining bound states in the continuum (BICs) with chirality, a high conversion efficiency and strong second‐harmonic circular dichroism (SHG‐CD) can be achieved. The simulated results show that the SHG conversion efficiency can reach 1.35 × 10 −2 % for a peak‐pump...
Paper Details
Title
Giant Nonlinear Circular Dichroism from High Q‐Factor Asymmetric Lithium Niobate Metasurfaces
Published Date
Sep 24, 2021
Journal
Volume
533
Issue
11
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