Publications de Francesco Michelotti

Planar multilayers as a versatile platform for nano-photonics

Olivier Martin, Hans Peter Herzig, Andrea Lovera, Tristan Sfez, Alessandro Angelini, Francesco Michelotti

2012

Two-dimensional optics on silicon nitride multilayer: Refraction of Bloch surface waves

Hans Peter Herzig, Libo Yu, Tristan Sfez, Francesco Michelotti

When properly designed, a dielectric multilayer can sustain Bloch surface waves (BSWs). Using a multiheterodyne scanning near-field optical microscope that resolves phase and polarization, we will show that a thin dielectric structure deposited on the mult ...

American Institute of Physics2010

Guided Bloch Surface Waves on Ultrathin Polymeric Ridges

Olivier Martin, Hans Peter Herzig, Tristan Sfez, Daniele Brunazzo, Francesco Michelotti

We present a direct evidence of Bloch surface waves (BSWs) waveguiding on ultrathin polymeric ridges, supported by near-field measurements. It is demonstrated that near-infrared BSWs sustained by a silicon-based multilayer can be locally coupled and guided ...

American Chemical Society (ACS)2010

Near-field polarization measurements based on two arbitrary, orthogonal optical field components

Olivier Martin, Hans Peter Herzig, Libo Yu, Tristan Sfez, Daniele Brunazzo, Francesco Michelotti

Using a multi-heterodyne scanning near-field optical microscope, we detect two arbitrary, orthogonal components of the near field. A numerical treatment of the experimental data allows the retrieval of the transverse and longitudinal components of the mode ...

2010

Bloch surface waves in ultrathin waveguides: near-field investigation of mode polarization and propagation

Olivier Martin, Hans Peter Herzig, Libo Yu, Tristan Sfez, Daniele Brunazzo, Francesco Michelotti

In this work, we use a multi-heterodyne scanning near-field optical microscope to investigate the polarization and propagation of Bloch surface waves in an ultrathin (similar to lambda/10) ridge waveguide. First, we show that the structure sustains three s ...

2010