90 citations · 269 across the 14 of their papers we have counts for
14 papers
Vortex inverted pin beams: Mitigation of scintillations in strong atmospheric turbulence
Sotiris Droulias, Michalis Loulakis, Dimitris G. Papazoglou +3
We recently introduced a new class of optical beams with a Bessel-like transverse profile and increasing beam width during propagation, akin to an "inverted pin". Owing to their sp…
Inverted pin beams for robust long-range propagation through atmospheric turbulence
Sotiris Droulias, Michalis Loulakis, Dimitris G. Papazoglou +3
We introduce a new class of optical beams, which feature a spatial profile akin to an ``inverted pin''. In particular, we asymptotically find that close to the axis the transverse…
Transparent Multispectral Photonic Electrode for All-Weather Stable and Efficient Perovskite Solar Cells
George Perrakis, Anna C. Tasolamprou, George Kakavelakis +5
Perovskite solar cells (PSCs) are the most promising technology for advancing current photovoltaic performance. However, the main challenge for their practical deployment and comme…
Strong and Broadband Pure Optical Activity in 3D Printed THz Chiral Metamaterials
Ioannis Katsantonis, Maria Manousidaki, Anastasios D. Koulouklidis +9
Optical activity (polarization rotation of light) is one of the most desired features of chiral media, as it is important for many polarization related applications. However, in th…
Ultraviolet radiation impact on the efficiency of commercial crystalline silicon-based photovoltaics: A theoretical thermal-electrical study in realistic device architectures
George Perrakis, Anna C. Tasolamprou, George Kenanakis +3
We investigate and evaluate the contribution of the ultraviolet radiation spectrum on the temperature and efficiency of commercial crystalline silicon-based photovoltaics (PVs) tha…
Passive radiative cooling impact on commercial crystalline silicon-based photovoltaics
George Perrakis, Anna C. Tasolamprou, George Kenanakis +3
The radiative cooling of objects during daytime under direct sunlight has recently been shown to be significantly enhanced by utilizing nanophotonic coatings. Multilayer thin film…
Ultrafast modulation in a THz graphene-based flat absorber through negative photoconductivity
Anna C. Tasolamprou, Anastasios D. Koulouklidis, Christina Daskalaki +9
We present the experimental and theoretical study of an ultrafast graphene based thin film absorption modulator for operation in the THz regime. The flat modulator is composed of a…
Phase memory preserving harmonics from abruptly autofocusing beams
Anastasios D. Koulouklidis, Dimitris G. Papazoglou, Vladimir Yu. Fedorov +1
We demonstrate both theoretically and experimentally that the harmonics from abruptly auto-focusing ring-Airy beams present a surprising property, they preserve the phase distribut…
Generation of intense terahertz radiation by two-color filamentation of laser pulses with different wavelengths
Vladimir Yu. Fedorov, Stelios Tzortzakis
We theoretically study the generation of terahertz (THz) radiation by two-color filamentation of ultrashort laser pulses with different wavelengths. We consider wavelengths in the…
Extreme THz fields from two-color filamentation of mid-infrared laser pulses
Vladimir Yu. Fedorov, Stelios Tzortzakis
Nonlinear THz photonics is probably the last frontier of nonlinear optics. The strength of both the electric and the magnetic fields of these ultrashort low frequency light bunches…
Non-diffracting states in one-dimensional Floquet photonic topological insulators
Matthieu Bellec, Claire Michel, Haisu Zhang +2
One dimensional laser-written modulated photonic lattices are known to be particularly suitable for diffraction management purposes. Here, we address the connection between discret…
Janus Waves
Dimitris G. Papazoglou, Vladimir Yu. Fedorov, Stelios Tzortzakis
We show the existence of a family of waves that share a common interesting property affecting the way they propagate and focus. These waves are a superposition of twin waves, which…
Wavefront shaping for opaque cylindrical lenses
Diego Di Battista, Haisu Zhang, Daniele Ancora +4
Wavefront shaping has revolutionized the concepts of optical imaging and focusing. Contrary to what was believed, strong scattering in the optical paths can be exploited in favor o…
A Faithful Communication Hamiltonian in Photonic Lattices
Matthieu Bellec, Georgios M. Nikolopoulos, Stelios Tzortzakis
Faithful communication is a necessary precondition for large scale all-optical networking and quantum information processing. Related theoretical investigations in different areas…