102 citations · 236 across the 7 of their papers we have counts for
8 papers
Wavelength-selective nonlinear wavefront control in resonant thin-film lithium niobate metasurfaces
Madona Mekhael, Timo Stolt, Helena Weigand +4
Nonlinear metasurfaces offer compact control over frequency conversion and wavefront shaping. However, existing approaches, often based on geometric phase, lack wavelength selectiv…
Phase-Matched Second-Harmonic Generation from Metasurfaces Inside Multipass Cells
Madona Mekhael, Timo Stolt, Anna Vesala +4
We demonstrate a simple and scalable approach to increase conversion efficiencies of nonlinear metasurfaces by incorporating them into multipass cells and by letting the pump beam…
Thermal Control of Plasmonic Surface Lattice Resonances
Jussi Kelavuori, Viatcheslav Vanyukov, Timo Stolt +4
Plasmonic metasurfaces exhibiting collective responses known as surface lattice resonances (SLRs) show potential for realizing tunable and flat photonic components for wavelength-s…
Broadband frequency conversion of ultrashort pulses using high- metasurface cavities
Timo Stolt, Mikko J. Huttunen
Frequency conversion of light can be dramatically enhanced using high quality factor (-factor) cavities. Unfortunately, the achievable conversion efficiencies and conversion ban…
Multiply-resonant Second-harmonic Generation using Surface Lattice Resonances in Aluminum Metasurfaces
Timo Stolt, Anna Vesala, Heikki Rekola +3
Nonlinear metamaterials show potential for realizing flat nonlinear optical devices but generally lack in terms of achievable conversion efficiencies. Recent work has focused on en…
Spectral Vector Beams for High-Speed Spectroscopic Measurements
Lea Kopf, Juan R. Deop Ruano, Markus Hiekkamäki +4
Structured light harnessing multiple degrees of freedom has become a powerful approach to use complex states of light in fundamental studies and applications. Here, we investigate…
Backward phase-matched second-harmonic generation from stacked metasurfaces
Timo Stolt, Jeonghyun Kim, Sébastien Héron +6
We demonstrate phase-matched second-harmonic generation (SHG) from three-dimensional metamaterials consisting of stacked metasurfaces. To achieve phase matching, we utilize a novel…
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…