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Updated: Feb 14, 2026

Interfacial Molecular-level Structures of Polymers and Biomacromolecules Revealed via Sum Frequency Generation Vibrational Spectroscopy
Published on: August 13, 2019
High Difference-Frequency Generation in SiO₂/MnF₂/Ag Sandwich Structures
1Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, China.
Abstract:
In this work, a simple antiferromagnetic (AF) sandwich structure is proposed to increase the difference-frequency (DF) outputs, where a noble metal, Ag layer, is put under an AF film. Numerical calculations are based on the SiO2/MnF2/Ag sandwich structure, where MnF2 is a typical AF material. We found that the DF outputs on the above surface are increased at least two orders which compared with those of MnF2 film. The continuous DF windows show that the outputs decrease with the increasing incident angles. The effect of the external magnetic field on DF outputs is also discussed.
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