Concept
Zone plate
Related publications (29)
A Low-Temperature Annealing Method for Alloy Nanostructures and Metasurfaces: Unlocking a Novel Degree of Freedom
Olivier Martin, Christian Santschi, Debdatta Ray, Hsiang-Chu Wang, Jeonghyeon Kim
The material and exact shape of a nanostructure determine its optical response, which is especially strong for plasmonic metals. Unfortunately, only a few plasmonic metals are available, which limits the spectral range where these strong optical effects ca ...
WILEY-V C H VERLAG GMBH2022Structured light generation by refractive-diffractive micro optical array illuminators
Structured light generation having broad applications in different optical fields, is the topic of this thesis. Our structured light generation strategy is based on applying periodic microoptical elements at the refraction-diffraction limit, under a focuse ...
EPFL2021Ultrasound Imaging: From Physical Modeling to Deep Learning
Among the medical imaging modalities, ultrasound (US) imaging is one of the safest, most widespread, and least expensive method used in medical diagnosis. In the past decades, several technological advances enabled the advent of ultrafast US imaging, an ac ...
EPFL2021The Polarity Reversal of Lightning‐Generated Sky Wave
Marcos Rubinstein, Mohammad Azadifar, Wenhao Hou
The polarity reversal of the lightning‐generated first sky wave as a function of the observation distance is studied using a novel approach combining the finite‐difference time domain (FDTD) method and the superposition principle of electromagnetic waves. ...
2020Light pattern generation with hybrid refractive microoptics under Gaussian beam illumination
The generation of wide-angle diffraction patterns can be done in different ways using either thin diffractive optical elements with small features sizes or arrays of microoptics with large optical paths that are thick diffractive optical elements. Our aim ...
OPTICAL SOC AMER2020Characterizing crystalline defects in single nanoparticles from angular correlations of single-shot diffracted X-rays
Christoph Bostedt, Alessandro Colombo, Giorgio Rossi
Characterizing and controlling the uniformity of nanoparticles is crucial for their application in science and technology because crystalline defects in the nanoparticles strongly affect their unique properties. Recently, ultra-short and ultra-bright X-ray ...
INT UNION CRYSTALLOGRAPHY2020Dot pattern generation using thick sinusoidal phase grating under Gaussian beam illumination
Far-field dot pattern generation is analyzed for a Gaussian beam source that illuminates a sinusoidal phase grating which is placed at a certain distance behind the beam waist. We obtain a bigger field of view with more numbers of points using a Gaussian b ...
SPIE-INT SOC OPTICAL ENGINEERING2019Selective femtosecond laser ablation via two-photon fluorescence imaging through a multimode fiber
Demetri Psaltis, Christophe Moser, Damien Claude-Marie Loterie, Eirini Kakkava, Donald Benjaman Conkey, Marilisa Romito
We demonstrate the ability of a multimode fiber probe to provide two-photon fluorescence (TPF) imaging feedback that guides the femtosecond laser ablation (FLA) in biological samples for highly selective modifications. We implement the system through the p ...
OPTICAL SOC AMER2019Carbon Nanotube Array Based Binary Gabor Zone Plate Lenses
Diffractive zone plates have a wide range of applications from focusing x-ray to extreme UV radiation. The Gabor zone plate, which suppresses the higher-order foci to a pair of conjugate foci, is an attractive alternative to the conventional Fresnel zone p ...
Nature Publishing Group2017Advanced optical components for mid-infrared applications
The mid-infrared wavelength range, defined from 2.5 um to 25 um is of a high scientific and technological interest. One of its main application field is in spectroscopy, since these wavelengths coincidewith the fundamental rotational-vibrational modes of m ...
EPFL2017