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physics.optics2015★ 9 cited
Optical loss by surface transfer doping in silicon waveguides
Luca Alloatti, Christian Koos, Juerg Leuthold
We show that undoped silicon waveguides may suffer of up to 1.8 dB/cm free-carrier absorption caused by improper surface passivation. To verify the effects of free-carriers we appl…
cond-mat.mtrl-sci2015★ 51 cited
Second-order nonlinear optical metamaterials: ABC-type nanolaminates
Luca Alloatti, Clemens Kieninger, Andreas Froelich +7
Structuring optical materials on a nanometer scale can lead to artificial effective media, or metamaterials, with strongly altered optical behavior. Metamaterials can provide a wid…