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In this paper we elaborate on our development of silicon photonic integrated circuits operating at wavelengths beyond the telecommunication wavelength window. Silicon-on-insulator waveguide circuits up to 3.8 μm wavelength are demonstrated as well as germanium-on-silicon waveguide circuits operating in the 5–5 μm wavelength range. The heterogeneous integration of III-V semiconductors and IV-VI semiconductors...
Reflectivity measurements on a film consisting of gold nanopillars surrounded by an anodized aluminum oxide medium suggest a refractive index much larger than that predicted by considering the dispersion curves of gold and aluminum oxide.
Nonlinear optics is one of the major successes of modern optics. Now due to continuing advances in nanofabrication technology, nanoscale, nonlinear optical assemblies or structures are possible in a variety of formats - from guided-wave devices, such as Si wires, to regular in-plane arrays. In this talk, we will review recent advances in nanoscale nonlinear optical phenomena, with particular emphasis...
We investigate experimentally and theoretically self-phase modulation and group velocity dispersion induced spectral broadening of picosecond pulses in silicon wires. Already for very low peak powers the limit for dense wavelength demultiplexing is reached.
Large scale ab initio cluster calculations are used to examine the binding of methyl halides to the (110) surface of GaAs. The results of the calculations are compared with recent experimental measurements of the binding energies. Three approaches to electron correlation are examined: density functional methods utilizing the generalized gradient approximations (specifically, the BLYP functional)...
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