Quantitative index metrology for 3D voxelated structures in photopolymer

ORAL

Abstract

Thanks to recent advances in two-stage photopolymers, it is now possible to dictate arbitrary 3D voxelated refractive index structures within a continuous volume of polymer, with dynamic range Δn in excess of 0.01 and with micron-scale spatial resolution. However, quantitative metrology for such structures remains an under-explored challenge. Here we demonstrate that TIE-based phase imaging, in conjunction with scanning confocal reflection microscopy, can achieve unambiguous quantitative characterization of arbitrary voxelated index structures. This characterization then guides the design, fabrication, and validation of novel optical components, including flexible gradient-index lenses for in situ medical imaging.

–

Presenters

  • Izabella R Berman

    Electrical, Computer and Energy Engineering, University of Colorado at Boulder

Authors

  • David J Glugla

    Electrical, Computer and Energy Engineering, University of Colorado at Boulder, Electrical, Computer, and Energy Engineering, University of Colorado at Boulder

  • Izabella R Berman

    Electrical, Computer and Energy Engineering, University of Colorado at Boulder

  • Madeline B Chosy

    Carleton College

  • Marvin D Alim

    Chemical and Biological Engineering, University of Colorado at Boulder, Electrical, Computer, and Energy Engineering, University of Colorado at Boulder

  • Amy C Sullivan

    Electrical, Computer and Energy Engineering, University of Colorado at Boulder, Electrical, Computer, and Energy Engineering, University of Colorado at Boulder

  • Robert R McLeod

    Electrical, Computer and Energy Engineering, University of Colorado at Boulder, Electrical, Computer, and Energy Engineering, University of Colorado at Boulder