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physics.optics2008★ 22 cited
Fermat's principle with complex refractive indices and local light-ray rotation
Bhuvanesh Sundar, Alasdair C. Hamilton, Johannes Courtial
We describe local light-ray rotation in terms of complex refractive indices. We show that Fermat's principle holds, and we derive an extended Snell's law. The change in the angle o…
physics.optics2008★ 28 cited
Local light-ray rotation
Alasdair C. Hamilton, Bhuvanesh Sundar, John Nelson +1
We present a sheet structure that rotates the local ray direction through an arbitrary angle around the sheet normal. The sheet structure consists of two parallel Dove-prism sheets…