Lens numerical aperture control with phase-change metasurfaces
Braid, G; Ruiz de Galarreta, C; Comley, A; et al.Bertolotti, J; Wright, CD
Date: 19 September 2022
Conference paper
Publisher
E\PCOS
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Abstract
The control of lens numerical aperture has many applications, including photography, imaging, and laser processing. Here we introduce active control of numerical aperture via a focusing phase-change meta-mirror. This can potentially operate at high speed in a low cost, light and compact format. We demonstrate designs for both infrared ...
The control of lens numerical aperture has many applications, including photography, imaging, and laser processing. Here we introduce active control of numerical aperture via a focusing phase-change meta-mirror. This can potentially operate at high speed in a low cost, light and compact format. We demonstrate designs for both infrared (3000 nm) and visible (632.8 nm) wavelengths.
Physics and Astronomy
Faculty of Environment, Science and Economy
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