MWIR metalenses designed with adjoint optimized libraries

Joshua Rollag; Ray Wambold; Ricky Gibson

doi:10.1117/12.3009972

13 March 2024 MWIR metalenses designed with adjoint optimized libraries

Joshua Rollag, Ray Wambold, Ricky Gibson

Proceedings Volume PC12897, High Contrast Metastructures XIII; PC1289714 (2024) https://doi.org/10.1117/12.3009972
Event: SPIE OPTO, 2024, San Francisco, California, United States

Conference Poster

Abstract

Adjoint optimization is used to construct libraries of varying numbers of arbitrarily shaped elements. These libraries are then used to create and compare four metalens designs. Each of the 0.5 mm diameter metalens are designed to have a NA of 0.5 and is optimized for wavelengths from 4 to 5 µm. Based on libraries consisting of 4, 8, 16, and 32 elements, the different silicon MWIR metalenses show little to no degradation in performance with increasing library size. Across the different library sizes, the transmission increases by 2%, the focal effieciency increases by 1% and the FWHM decreases by less than a percent.

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Joshua Rollag, Ray Wambold, and Ricky Gibson "MWIR metalenses designed with adjoint optimized libraries", Proc. SPIE PC12897, High Contrast Metastructures XIII, PC1289714 (13 March 2024); https://doi.org/10.1117/12.3009972

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