Design of high-efficiency and large-angle homo-metagratings for light source integration

Wei‑Cheng Tsai, Yu-Heng Hong, Hao‑Chung Kuo, Yao-Wei Huang

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Meta-optics integrated with light sources has gained significant attention. However, most focused on the efficiency of metasurfaces themselves, rather than the efficiency of integration. To design highly efficient beam deflection, we develop a scheme of homo-metagrating, involving the same material for meta-atoms, substrate, and top layer of the laser, to achieve near-unity power from light-emitting to metasurfaces. We utilize three degrees of freedom: overall add-on phase, parameters of meta-atoms in a period, and lattice arrangement. The overall efficiency of homo-metagratings is higher than that of hetero-metagratings. We believe our approach is capable of being implemented in various ultracompact optic systems.
Original languageAmerican English
Pages (from-to)24404-24411
Number of pages8
JournalOptics Express
Issue number15
StatePublished - 10 Jul 2023


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