Optical properties of spherulite opals

Venkata Jayasurya Yallapragada, Dan Oron

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


Spherulites are birefringent structures with spherical symmetry, typically observed in crystallized polymers. We compute the band structure of opals made of close-packed assemblies of highly birefringent spherulites. We demonstrate that spherulitic birefringence of constituent spheres does not affect the symmetries of an opal, yet significantly affects the dispersion of eigenmodes, leading to new pseudogaps in sections of the band structure and, consequently, enhanced reflectivity.

Original languageEnglish
Pages (from-to)5860-5863
Number of pages4
JournalOptics Letters
Issue number23
Publication statusPublished - 2019

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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