Diffractive metasurface light-shaping from fiber endoscope probes for increased depth of field

Fei He; Rafael Fuentes-Dominguez; Richard Cousins; Christopher J. Mellor; Jennifer K. Barton; George S. D. Gordon

doi:10.1117/12.2648860

14 March 2023 Diffractive metasurface light-shaping from fiber endoscope probes for increased depth of field

Fei He, Rafael Fuentes-Dominguez, Richard Cousins, Christopher J. Mellor, Jennifer K. Barton, George S. D. Gordon

Proceedings Volume 12356, Endoscopic Microscopy XVIII; 1235606 (2023) https://doi.org/10.1117/12.2648860
Event: SPIE BiOS, 2023, San Francisco, California, United States

Abstract

In applications such as optical coherence tomography, there is a need both to achieve large depth of field by light shaping and to maintain ultracompact form factors. Flat metasurfaces on optical fibers can achieve such requirements, with designs such as encapsulated diffractive axicon masks. They have the advantages of simple fabrication and transfer, scalability to multi-layer structures and ability to wavelength and/or polarization control. We show a method to shape light from optical fibers via diffractive metallic metalenses bonded onto fiber facets. We discuss a novel process for fabrication and, as proof-of-principle, demonstrate Fresnel zone plates and diffractive axicons on optical fiber facets.

Conference Presentation

Citation Download Citation

Fei He, Rafael Fuentes-Dominguez, Richard Cousins, Christopher J. Mellor, Jennifer K. Barton, and George S. D. Gordon "Diffractive metasurface light-shaping from fiber endoscope probes for increased depth of field", Proc. SPIE 12356, Endoscopic Microscopy XVIII, 1235606 (14 March 2023); https://doi.org/10.1117/12.2648860

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