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Pseudospectral method for the analysis of diffractive optical elements

Publications associées (33)

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Influence of reflecting walls on edge diffraction simulation in geometrical acoustics

Dirk Schröder

Edge diffraction can be introduced into Geometrical Acoustics mainly by three models: detour-based, energetic and wave-based diffraction models. In the past, we thoroughly compared Maekawa's detour law, the uncertainty relation based diffraction method and ...

Acoustical Society of America2013

Talbot images of wavelength-scale amplitude gratings

Hans Peter Herzig, Toralf Scharf, Myun Sik Kim

By means of experiment and simulation, we achieve unprecedented insights into the formation of Talbot images to be observed in transmission for light diffracted at wavelength-scale amplitude gratings. Emphasis is put on disclosing the impact and the interp ...

Optical Society of America2012

High-resolution hard-x-ray microscopy using second-order zone-plate diffraction

Giorgio Margaritondo

Odd-order diffraction of zone plates (ZPs) is already used for x-ray microscopy but the potential offered by even-order diffraction must still be fully exploited. Width differences between lines and interline spaces transfer intensity from odd-order to eve ...

2011

Fourier optics analysis of grating sensors with tilt errors

Muhammed Fatih Toy, Onur Ferhanoglu

Dynamic diffraction gratings can be microfabricated with precision and offer extremely sensitive displacement measurements and light intensity modulation. The effect of pure translation of the moving part of the grating on diffracted order intensities is w ...

2011

Phase Retrieval and Gaussian Beam Mode Decomposition of Gyrotron Beams

In this dissertation, we have developed the necessary basis for the characterization of the RF output of a gyrotron. The characterization includes the phase reconstruction and Gaussian beam mode decomposition. In order to analyze the phase reconstruction i ...

EPFL2010

Transient behavior of surface plasmon polaritons scattered at a subwavelength groove

Olivier Martin

We present a numerical study and analytical model of the optical near field diffracted in the vicinity of subwavelength grooves milled in silver surfaces. The Green's tensor approach permits the computation of the phase and amplitude dependence of the diff ...

2007

Numerical Optics in Digital Holography

Christian Depeursinge, Tristan Colomb, Frédéric Montfort, Jonas Kühn, Florian Charrière

As digital holography achieves numerical reconstruction of the complex wavefront diffracted by specimen, a numerical optics formalism has been developed: numerical filters replace pinholes in Fourier planes, numerical lenses allow aberrations compensation ...

OSA2007

Nonlinearity management in optics: Experiment, theory, and simulation

Demetri Psaltis

We conduct an experimental investigation of nonlinearity management in optics using femtosecond pulses and layered Kerr media consisting of glass and air. By examining the propagation properties over several diffraction lengths, we show that wave collapse ...

2006

On the chromatic aberration of microlenses

Hans Peter Herzig, Toralf Scharf

The optical properties of plano-convex refractive microlenses with low Fresnel Number (typically FN < 10) are investigated. It turns out that diffraction effects at the lens aperture limit the range of the effective focal length. The upper limit of the foc ...

2006

Matrix optics approach for liquid crystalline blue phases

Toralf Scharf

Liquid crystalline blue phases (LCBP) and their diffraction patterns were investigated experimentally and theoretically. We measured the diffraction pattern for different wavelengths of monochromatic light with the help of a conoscopic setup of a polarizat ...

2005