High-efficiency sum frequency generation from inverse designed metasurfaces

Neuton Li, Jihua Zhang, Dragomir N. Neshev, Andrey A. Sukhorukov

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Sum frequency generation is the process in which two incoming photons are converted into an outgoing photon of higher energy. This process is highly inefficient, and therefore requires either large interaction distances in bulky crystals, or large field concentrations in the non-linear materials. Metasurfaces are one such platform to generate extreme field enhancements with resonant processes. In this work, we use topology optimisation to design metasurfaces that exhibit increase high efficiency sum frequency generation, as well as the ability to tailor the generated polarisation.

Original languageEnglish
Title of host publicationActive Photonic Platforms, APP 2023
EditorsGanapathi S. Subramania, Stavroula Foteinopoulou
ISBN (Electronic)9781510665088
Publication statusPublished - 2023
Event2023 Active Photonic Platforms, APP 2023 - San Diego, United States
Duration: 20 Aug 202324 Aug 2023

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


Conference2023 Active Photonic Platforms, APP 2023
Country/TerritoryUnited States
CitySan Diego


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