TY - JOUR
T1 - Optical properties of spherulite opals
AU - Yallapragada, Venkata Jayasurya
AU - Oron, Dan
N1 - Funding Information:
Israeli Centers for Research Excellence (?Circle of Light?); CrownPhotonicsCentre. The authors thank Ron Tenne and Benjamin Palmer for helpful discussions. D.O. is the incumbent of the Harry Weinrebe Professorial Chair of Laser Physics.
Publisher Copyright:
© 2019 Optical Society of America.
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2019
Y1 - 2019
N2 - 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.
AB - 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.
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U2 - 10.1364/OL.44.005860
DO - 10.1364/OL.44.005860
M3 - Article
C2 - 31774798
AN - SCOPUS:85075756978
VL - 44
SP - 5860
EP - 5863
JO - Optics Letters
JF - Optics Letters
SN - 0146-9592
IS - 23
ER -