We have fabricated a new class of second order nonlinear optical materials by combining ionic sel... more We have fabricated a new class of second order nonlinear optical materials by combining ionic self-assembled multilayer (ISAM) films with silver nanoparticle arrays in a non-centrosymmetric geometry. These hybrid films exhibit second-harmonic generation (SHG) efficiencies as much as 1600 times larger than unmodified, conventional ISAM films, which makes a three bilayer hybrid film perform at the same level as a
ABSTRACT Ionic self-assembled multilayer (ISAM) films have been combined with plasmonic nanoparti... more ABSTRACT Ionic self-assembled multilayer (ISAM) films have been combined with plasmonic nanoparticles to yield composite films with second harmonic conversion efficiencies several hundred times larger than the unmodified ISAM films
We have demonstrated large enhancements of the effective second-order nonlinear susceptibility (c... more We have demonstrated large enhancements of the effective second-order nonlinear susceptibility (chi(2)) of ionic self-assembled multilayer (ISAM) films, causing a film with just 3 bilayers to be optically equivalent to a 700-1000 bilayer film. This was accomplished by using nanosphere lithography to deposit silver nanoparticles on the ISAM film, tuning the geometry of the particles to make their plasmonic resonances overlap the frequency of optical excitation. An enhancement in the efficiency of second harmonic generation (SHG) by as much as 1600 times was observed. Even though this is already a large value, we suggest that further refinements of the techniques are expected to lead to additional enhancements of similar or larger magnitude.
We have fabricated a new class of second order nonlinear optical materials by combining ionic sel... more We have fabricated a new class of second order nonlinear optical materials by combining ionic self-assembled multilayer (ISAM) films with silver nanoparticle arrays in a non-centrosymmetric geometry. These hybrid films exhibit second-harmonic generation (SHG) efficiencies as ...
We have fabricated a new class of second order nonlinear optical materials by combining ionic sel... more We have fabricated a new class of second order nonlinear optical materials by combining ionic self-assembled multilayer (ISAM) films with silver nanoparticle arrays in a non-centrosymmetric geometry. These hybrid films exhibit second-harmonic generation (SHG) efficiencies as much as 1600 times larger than unmodified, conventional ISAM films, which makes a three bilayer hybrid film perform at the same level as a
ABSTRACT Ionic self-assembled multilayer (ISAM) films have been combined with plasmonic nanoparti... more ABSTRACT Ionic self-assembled multilayer (ISAM) films have been combined with plasmonic nanoparticles to yield composite films with second harmonic conversion efficiencies several hundred times larger than the unmodified ISAM films
We have demonstrated large enhancements of the effective second-order nonlinear susceptibility (c... more We have demonstrated large enhancements of the effective second-order nonlinear susceptibility (chi(2)) of ionic self-assembled multilayer (ISAM) films, causing a film with just 3 bilayers to be optically equivalent to a 700-1000 bilayer film. This was accomplished by using nanosphere lithography to deposit silver nanoparticles on the ISAM film, tuning the geometry of the particles to make their plasmonic resonances overlap the frequency of optical excitation. An enhancement in the efficiency of second harmonic generation (SHG) by as much as 1600 times was observed. Even though this is already a large value, we suggest that further refinements of the techniques are expected to lead to additional enhancements of similar or larger magnitude.
We have fabricated a new class of second order nonlinear optical materials by combining ionic sel... more We have fabricated a new class of second order nonlinear optical materials by combining ionic self-assembled multilayer (ISAM) films with silver nanoparticle arrays in a non-centrosymmetric geometry. These hybrid films exhibit second-harmonic generation (SHG) efficiencies as ...
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Papers by Cemil Durak