Nonlinear dielectric nanoresonators and metasurfaces: toward efficient generation of entangled photons

PR Sharapova, SS Kruk… - Laser & Photonics …, 2023 - Wiley Online Library
Among the most prominent effects resulting from nonlinear light–matter interaction is the
generation of correlated and entangled photons through various processes, notably via …

Fabrication of nanoscale lithium niobate waveguides for second-harmonic generation

R Geiss, S Saravi, A Sergeyev, S Diziain, F Setzpfandt… - Optics letters, 2015 - opg.optica.org
Nanoscale waveguides are basic building blocks of integrated optical devices. Especially,
waveguides made from nonlinear optical materials, such as lithium niobate, allow access to …

Second-harmonic and cascaded third-harmonic generation in generalized quasiperiodic poled lithium niobate waveguides

L Zhang, X Wu, Z Hao, R Ma, F Gao, F Bo, G Zhang… - Optics Letters, 2023 - opg.optica.org
Lithium niobate (LN) thin film has recently emerged as an important platform for nonlinear
optical investigations for its large χ^(2) nonlinear coefficients and ability of light localization …

Enhancing guided second-harmonic light in lithium niobate nanowires

A Sergeyev, R Geiss, AS Solntsev… - ACS …, 2015 - ACS Publications
We experimentally demonstrate practical approaches to enhance second-harmonic (SH)
generation in individual lithium niobate nanowires (NWs) with a sub-micrometer cross …

Grating coupler for an on-chip lithium niobate ridge waveguide

MS Nisar, X Zhao, A Pan, S Yuan… - IEEE Photonics …, 2016 - ieeexplore.ieee.org
Grating Coupler for an On-Chip Lithium Niobate Ridge Waveguide Page 1 Open Access Grating
Coupler for an On-Chip Lithium Niobate Ridge Waveguide Volume 9, Number 1, February 2017 …

Evidence of cascaded third-harmonic generation in noncentrosymmetric gold nanoantennas

M Celebrano, A Locatelli, L Ghirardini, G Pellegrini… - Nano …, 2019 - ACS Publications
The optimization of nonlinear optical processes on the nanoscale is a crucial step for the
integration of complex functionalities into compact photonic devices and metasurfaces. In …

Enhancement of second harmonic signal in nanofabricated cones

F Dutto, M Heiss, A Lovera, O López-Sánchez… - Nano …, 2013 - ACS Publications
Geometrical effects in optical nanostructures on nanoscale can lead to interesting
phenomena such as inhibition of spontaneous emission, 1, 2 high-reflecting omnidirectional …

Low‐Harmonic Generation in Cascaded Thin‐Film Lithium Niobate Waveguides

T Sjaardema, M Malinowski, A Rao… - Advanced Photonics …, 2022 - Wiley Online Library
Herein, frequency conversion to the third‐and fourth‐order harmonics are demonstrated in
ultracompact cascaded periodically poled thin‐film lithium niobate (LN) waveguides on …

Second-harmonic generation in lithium niobate nanowires for local fluorescence excitation

A Sergeyev, R Geiss, AS Solntsev, A Steinbrück… - Optics …, 2013 - opg.optica.org
We study the nonlinear optical properties of lithium niobate (LiNbO_3) nanowires (NWs)
fabricated by a top-down ion beam enhanced etching method. First, we demonstrate …

Ultra-high four wave mixing efficiency in slot waveguides with silicon nanocrystals

A Trita, C Lacava, P Minzioni, JP Colonna… - Applied Physics …, 2011 - pubs.aip.org
We report on wavelength conversion through four-wave-mixing in silicon slot-waveguides
with embedded silicon nanocrystals. The combination of strong optical confinement and Si …