Anomalous reflections at photonic crystal interfaces

Xiaofang Yu; Shanhui Fan

doi:10.1117/12.588658

13 April 2005 Anomalous reflections at photonic crystal interfaces

Xiaofang Yu, Shanhui Fan

Proceedings Volume 5733, Photonic Crystal Materials and Devices III; (2005) https://doi.org/10.1117/12.588658
Event: Integrated Optoelectronic Devices 2005, 2005, San Jose, California, United States

Abstract

The reflection phenomena of a light beam incident upon the interfaces between the crystal and a uniform dielectric are explored in this paper. We show that neither the phase velocity nor the group velocity directions of the reflected beam satisfy Snell’s law and we prove that a generalized wave-vector conservation relation still applies even when the interface is not aligned with special crystal directions. Moreover, the system exhibits remarkable and unusual reflection effects. In particular, total internal reflection is absent except at discrete angular values. The direction of reflection beam can also be pinned along special crystal directions, independent of the orientation of the interface. And finally, at glancing incidences, strong backward reflection may occur. These effects may be important for creating integrated photonic circuits, and for on-chip image transfer.

Citation Download Citation

Xiaofang Yu and Shanhui Fan "Anomalous reflections at photonic crystal interfaces", Proc. SPIE 5733, Photonic Crystal Materials and Devices III, (13 April 2005); https://doi.org/10.1117/12.588658

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