Publication
Inverse design of diffractive optical elements using step-transition perturbation approach
Related publications (41)
ON THE DESIGN AND OPTIMIZATION OF WIDE ANGLE DIFFRACTIVE OPTICAL ELEMENTS
Diffractive optical elements (DOEs) which consist of microstructure surface relief permit the generation of the spatial distribution of light beams by using a single element. Due to their compact size, design flexibility, and mass productivity, they are us ...
EPFL2021Narrowband Optical Coupler Using Fano Interference in First Order Diffraction
Olivier Martin, Benjamin Gallinet, Giorgio Quaranta, Fabian Michael Lütolf
Light coupling in waveguides has been extensively investigated in a variety of contexts, from photonic integrated circuits to biosensing and near-eye displays for augmented reality. Here, narrowband diffraction is reported using a Fano interference effect ...
AMER CHEMICAL SOC2021Adjoint method and inverse design for diffractive beam splitters
Diffractive optical elements with a large diffraction angle require feature sizes down to sub-wavelength dimensions, which require a rigorous electromagnetic computational model for calculation. However, the computational optimization of these diffractive ...
SPIE-INT SOC OPTICAL ENGINEERING2020Inverse design and demonstration of high-performance wide-angle diffractive optical elements
Diffractive optical elements are ultra-thin optical components required for constructing very compact optical 3D sensors. However, the required wide-angle diffractive 2D fan-out gratings have been elusive due to design challenges. Here, we introduce a new ...
OPTICAL SOC AMER2020Light 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 AMER2020Refinement for single-nanoparticle structure determination from low-quality single-shot coherent diffraction data
Christoph Bostedt, Christophe Nicolas
With the emergence of X-ray free-electron lasers, it is possible to investigate the structure of nanoscale samples by employing coherent diffractive imaging in the X-ray spectral regime. In this work, we developed a refinement method for structure reconstr ...
INT UNION CRYSTALLOGRAPHY2020Design and Analysis of Binary Fan-out Gratings based on Step-Transition Perturbation Approach
Nowadays, diffractive optical elements are used for a variety of applications because of their high design flexibility, compact size, and mass productivity. At the same time, they require having high and complex optical functionalities such as a large numb ...
SPIE-INT SOC OPTICAL ENGINEERING2019Adjoint-based Optimization for Diffractive Beam-Splitters
Computational optimization of diffractive elements is often limited by a large number of design parameters. Adjoint method allows the gradient of target function respect to all design variables to be calculated with only two electromagnetic simulations. We ...
IEEE2019Diffractive Optical Elements Investigation in the Phase Domain
Toralf Scharf, Myun Sik Kim, Dong Cheon Kim, Michail Symeonidis
In this work we demonstrate the advantages of investigating diffractive optical elements in the phase domain. In this regime we can detect features that are not restrained by the diffraction limit and relate them to the geometrical and optical properties o ...
SPIE-INT SOC OPTICAL ENGINEERING2019Monitoring Spontaneous Charge-Density Fluctuations by Single-Molecule Diffraction of Quantum Light
Homodyne X-ray diffraction signals produced by classical light and classical detectors are given by the modulus square of the charge density in momentum space vertical bar sigma(q)vertical bar(2), missing its phase, which is required in order to invert the ...
2019