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physics.optics2025★ 1 cited
Experimental demonstration of a beam shaping non-imaging metasurface
Kirstine Engell Sandager Poulsen, Xavier Zambrana-Puyalto, Rafael de la Fuente Herrezuelo +2
Light emitting diodes have superior performance over most other light sources, but the need for secondary optics to shape their illumination for specific applications yield bulky l…
physics.optics2013
On the Optical Role of Randomness for Structured Surfaces
Villads Egede Johansen
It has been known for years how random height variations of a repeated nano-scale structure can give rise to smooth angular color variations instead of the well-known diffraction p…