Optically anisotropic porous silicon microlenses with tunable refractive indexes and birefringence profiles Article Swipe

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Christian R. Ocier , Corey A. Richards , Daniel Bacon‐Brown , Neil A. Krueger , Matthew K. Clawson , Julio A. N. T. Soares , Paul V. Braun ·

YOU? · · 2020 · Open Access · · DOI: https://doi.org/10.1364/ome.385013

The effect of spatially varying birefringence on the focusing behavior of porous silicon (PSi) and porous silicon dioxide (PSiO 2 ) gradient refractive index (GRIN) lenses is investigated. Both materials attain broad, tunable refractive indexes and birefringence profiles, with PSi having a maximum birefringence of ∼0.26 and PSiO 2 a reduced maximum birefringence of ∼0.03 at 633 nm. These GRIN lenses exhibit polarization-dependent split focusing behavior, wherein the divergence angle between the twin foci increases with the birefringence gradient. PSi’s large birefringence allows the divergence angle to be tuned such that light focuses away from the center of the lens. These GRIN elements demonstrate how tunable birefringent materials can be used to engineer polarization-selective optical responses.

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$Refractive Index$

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Birefringence Materials science Refractive index Optics Polarization (electrochemistry) Anisotropy Porous silicon Silicon Optoelectronics Physics Chemistry Physical chemistry

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Type: article
Language: en
Landing Page: https://doi.org/10.1364/ome.385013
OA Status: gold
Cited By: 12
References: 43
Related Works: 10
OpenAlex ID: https://openalex.org/W3006767652

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DOI: https://doi.org/10.1364/ome.385013

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Title: Optically anisotropic porous silicon microlenses with tunable refractive indexes and birefringence profiles

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Language: en

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Publication year: 2020

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Publication date: 2020-02-21

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Authors: Christian R. Ocier, Corey A. Richards, Daniel Bacon‐Brown, Neil A. Krueger, Matthew K. Clawson, Julio A. N. T. Soares, Paul V. Braun

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Landing page: https://doi.org/10.1364/ome.385013

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Concepts: Birefringence, Materials science, Refractive index, Optics, Polarization (electrochemistry), Anisotropy, Porous silicon, Silicon, Optoelectronics, Physics, Chemistry, Physical chemistry

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Cited by: 12

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