Multifocal metalens based on multilayer Pancharatnam-Berry phase elements architecture (Conference Presentation)

Ronghui Lin

doi:10.1117/12.2544940

10 March 2020 Multifocal metalens based on multilayer Pancharatnam-Berry phase elements architecture (Conference Presentation)

Ronghui Lin

Author Affiliations +

Proceedings Volume 11289, Photonic and Phononic Properties of Engineered Nanostructures X; 112890M (2020) https://doi.org/10.1117/12.2544940
Event: SPIE OPTO, 2020, San Francisco, California, United States

Abstract

Bifocal and multifocal lenses allowing the incoming light to be focused at different focal spots can be applied in imaging, optical communication, and medical applications. In this study, we aim to solve the problems of multifocal lens design by using multilayer Pancharatnam-Berry (P-B) phase architecture. First, we will answer the fundamental question of what will happen when two layers of P-B phase elements are superimposed on each other. We show that a diffraction order with a phase shift equal to the rotation angle difference of the two layers can be observed. Based on this, we designed a multilayer metalens with arbitrary control of focal spot location and relative intensity.

Conference Presentation

Citation Download Citation

Ronghui Lin "Multifocal metalens based on multilayer Pancharatnam-Berry phase elements architecture (Conference Presentation)", Proc. SPIE 11289, Photonic and Phononic Properties of Engineered Nanostructures X, 112890M (10 March 2020); https://doi.org/10.1117/12.2544940

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