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

  • Ocier C
  • Richards C
  • Bacon-Brown D
  • et al.
10Citations
Citations of this article
9Readers
Mendeley users who have this article in their library.
Get full text

Abstract

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.

Cite

CITATION STYLE

APA

Ocier, C. R., Richards, C. A., Bacon-Brown, D. A., Krueger, N. A., Clawson, M. K., Soares, J. A. N. T., & Braun, P. V. (2020). Optically anisotropic porous silicon microlenses with tunable refractive indexes and birefringence profiles. Optical Materials Express, 10(4), 868. https://doi.org/10.1364/ome.385013

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free