8 papers
On the Automated Detection of Corneal Edema with Second Harmonic Generation Microscopy and Deep Learning
Stefan R. Anton, Rosa M. Martínez-Ojeda, Radu Hristu +7
When the cornea becomes hydrated above its physiologic level it begins to significantly scatter light, loosing transparency and thus impairing eyesight. This condition, known as co…
Transient perturbative nonlinear responses of plasmonic materials
Mikko J. Huttunen, Jussi Kelavuori, Marco Ornigotti
Recent investigations on optical nonlinearities of plasmonic materials suggest their responses may be even beyond the usual perturbative description. To better understand these sur…
Ultra-high-Q resonances in plasmonic metasurfaces
M. Saad Bin-Alam, Orad Reshef, Yaryna Mamchur +8
Plasmonic nanostructures hold promise for the realization of ultra-thin sub-wavelength devices, reducing power operating thresholds and enabling nonlinear optical functionality in…
Multi-resonant high-Q plasmonic metasurfaces
Orad Reshef, Md Saad-Bin-Alam, Mikko J. Huttunen +5
Resonant metasurfaces are devices composed of nanostructured sub-wavelength scatterers that generate narrow optical resonances, enabling applications in filtering, nonlinear optics…
Less is more - enhancement of second-harmonic generation from metasurfaces by reduced nanoparticle density
Robert Czaplicki, Antti Kiviniemi, Mikko J. Huttunen +7
We investigate optical second-harmonic generation (SHG) from metasurfaces where noncentrosymmetric V-shaped gold nanoparticles are ordered into regular array configurations. In con…
Demonstration of Optical Nonlinearity in InGaAsP/InP Passive Waveguides
Shayan Saeidi, Payman Rasekh, Kashif M. Awan +3
We report on the study of the third-order nonlinear optical interactions in InGaAsP/InP strip-loaded waveguides. The material composition and waveguide…