Multiple Bragg wave coupling in photonic band-gap crystals

Henry M. van Driel; Willem L. Vos

doi:10.1103/PhysRevB.62.9872

Multiple Bragg wave coupling in photonic band-gap crystals

Henry M. van Driel, Willem L. Vos^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

155 Citations (Scopus)

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Abstract

We report angle and polarization resolved reflectivity from strongly photonic fcc crystals consisting of air spheres in titania. For a 30° range of angles of incidence, multiple peaks with distinct polarization dependence are observed that clearly reveal avoided crossing behavior. Calculated photonic dispersion curves show that the multiple peaks result from band repulsion of Bloch states due to simultaneous Bragg diffraction by (111) and (200) planes. Our results demonstrate that many-wave coupling leads to substantial deviations from simple Bragg diffraction, with significantly flattened bands, a requirement for the appearance of complete photonic band gaps.

Original language	English
Pages (from-to)	9872-9875
Number of pages	4
Journal	Physical Review B (Condensed Matter and Materials Physics)
Volume	62
Issue number	15
DOIs	https://doi.org/10.1103/PhysRevB.62.9872
Publication status	Published - 15 Oct 2000
Externally published	Yes

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title = "Multiple Bragg wave coupling in photonic band-gap crystals",

abstract = "We report angle and polarization resolved reflectivity from strongly photonic fcc crystals consisting of air spheres in titania. For a 30° range of angles of incidence, multiple peaks with distinct polarization dependence are observed that clearly reveal avoided crossing behavior. Calculated photonic dispersion curves show that the multiple peaks result from band repulsion of Bloch states due to simultaneous Bragg diffraction by (111) and (200) planes. Our results demonstrate that many-wave coupling leads to substantial deviations from simple Bragg diffraction, with significantly flattened bands, a requirement for the appearance of complete photonic band gaps.",

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AB - We report angle and polarization resolved reflectivity from strongly photonic fcc crystals consisting of air spheres in titania. For a 30° range of angles of incidence, multiple peaks with distinct polarization dependence are observed that clearly reveal avoided crossing behavior. Calculated photonic dispersion curves show that the multiple peaks result from band repulsion of Bloch states due to simultaneous Bragg diffraction by (111) and (200) planes. Our results demonstrate that many-wave coupling leads to substantial deviations from simple Bragg diffraction, with significantly flattened bands, a requirement for the appearance of complete photonic band gaps.

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Multiple Bragg wave coupling in photonic band-gap crystals

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