Claude Renaut
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Publications 1 - 10 of 15
- Image-based autofocusing system for nonlinear optical microscopy with broad spectral tuningItem type: Journal Article
Optics ExpressSaerens, Grégoire; Lang, Lukas; Renaut, Claude; et al. (2019)We present an image-based autofocusing system applied in nonlinear microscopy and spectroscopy with a wide range of excitation wavelengths. The core of the developed autofocusing system consists of an adapted two-step procedure maximizing an image score with six different image scorings algorithms implemented to cover different types of focusing scenarios in automated regime for broad wavelength region. The developed approach is combined with an automated multi-axis alignment procedure. We demonstrate the key abilities of the autofocusing procedure on different types of structures: single nanoparticles, nanowires and complex 3D nanostructures. Based on these experiments, we determine the optimal autofocusing algorithms for different types of structures and applications. - Hybrid Gold-Perovskite Nanodimers for Enhancing Second-Harmonic GenerationItem type: Other Conference ItemRenaut, Claude; Hendricks, Nicholas R.; Timpu, Flavia; et al. (2017)
- Anapoles in Free-Standing III–V Nanodisks Enhancing Second-Harmonic GenerationItem type: Journal Article
Nano LettersTimofeeva, Maria; Lang, Lukas; Timpu, Flavia; et al. (2018) - Reshaping the Second-Order Polar Response of Hybrid Metal–Dielectric NanodimersItem type: Journal Article
Nano LettersRenaut, Claude; Lang, Lukas; Frizyuk, Kristina; et al. (2019) - III-V nanowires as building blocks for nonlinear photonicsItem type: Conference PosterSaerens, Grégoire; Tang, Iek; Bloch, Esther; et al. (2020)
- Engineering of the Second‐Harmonic Emission Directionality with III–V Semiconductor Rod NanoantennasItem type: Journal Article
Laser & Photonics ReviewsSaerens, Grégoire; Tang, Iek; Petrov, Mihail I.; et al. (2020)The ability to engineer nonlinear optical emission from nanostructures is a key challenge to create efficient and compact components for integrated devices. This paper shows a method to control and manipulate the directionality of second‐harmonic generation emission by engineering geometry and position of rod nanoantennas. Single and dimer nanoantennas are fabricated by slicing III–V semiconductor nanowires with focused ion beam milling. The nonlinear optical response of nanoantennas is tailored by adjusting their length and position to achieve a targeted phase difference. The studied GaAs nanoantennas have a wurtzite structure that allows to achieve preferable directions for the second‐harmonic emission compared to a typical bulk zinc blende structure from top‐down fabricated nanostructures. Wurtzite nanoantennas provide a pure electric dipole response at the second‐harmonic wavelength, which together with pi‐phase control of emitted light is used for designing nonlinear emission patterns. The simulation results show how to redirect the second‐harmonic beam up to 30° and how to tailor the emission profile by adding elements. This method of second‐harmonic generation manipulation and phase array engineering can be applied to different types of nanowires and nanostructures. Nonlinear beam steering with structures from nanowires will foster the creation of compact optical components for integrated circuits. - Hybrid plasmonic - all-dielectric nanodimers forsecond-harmonic generationItem type: Other Conference Item
NANOP 2017: Book of AbstractsPetrov, Mihail; Timpu, Flavia; Hendricks, Nicholas R.; et al. (2017) - Lithium Niobate Nanocubes as Linear and Nonlinear Ultraviolet Mie ResonatorsItem type: Journal Article
ACS PhotonicsTimpu, Flavia; Sendra, Joan; Renaut, Claude; et al. (2019) - III-V nanoantennas fabricated from nanowires for enhanced nonlinear optical signal at Mie resonancesItem type: Conference Paper
Proceedings of SPIE ~ Nanophotonics VIITimofeeva, Maria; Lang, Lukas; Renaut, Claude; et al. (2018) - Metal-Dielectric Nanodimers with Hybridized Resonances Probed by Second-Harmonic PolarizationItem type: Conference Paper
OSA Technical Digest ~ Conference on Lasers and Electro-OpticsRenaut, Claude; Lang, Lukas; Frizyuk, Kristina; et al. (2019)
Publications 1 - 10 of 15