Publications related to Aperture synthesis

Iterative method for zero-order suppression in off-axis digital holography

Christian Depeursinge, Nicolas Pavillon, Cristian Arfire

We propose a method to suppress the so-called zero-order term in a hologram, based on an iterative principle. During the hologram acquisition process, the encoded information includes the intensities of the two beams creating the interference pattern, whic ...

Optical Society of America2010

Image Reconstruction in the Gigavision Camera

Martin Vetterli, Edoardo Charbon, Sabine Süsstrunk, Luciano Sbaiz, Feng Yang

Recently we have proposed a new image device called the gigavision camera. The main feature of this camera is that the pixels have a binary response. The response function of a gigavision sensor is non-linear and similar to a logarithmic function, which ma ...

2009

Compressed sensing imaging techniques for aperture synthesis by radio interferometry

Pierre Vandergheynst, Yves Wiaux, Gilles Puy, Laurent Jacques

Radio interferometry probes astrophysical signals through incomplete and noisy Fourier measurements. The theory of compressed sensing demonstrates that such measurements may actually suffice for accurate reconstruction of the signals. We propose new generi ...

2008

Advanced passive micro-optical elements

Micro-optical elements are optical elements having size or details in the range of the micrometer scale. The emergency of such elements is strongly linked to the development made in the fabrication techniques during the nineties to follow the still actual ...

Institut de Microtechnique, Université de Neuchâtel2008

Efficient current injection scheme for nitride vertical cavity surface emitting lasers

Nicolas Grandjean, Jean-François Carlin, Raphaël Butté, Eric Feltin, Julien Dorsaz, Antonino Francesco Castiglia, Dobri Simeonov

The authors report the realization of InGaN/GaN light emitting diodes (LEDs) with an electrical injection design suitable for vertical cavity surface emitting lasers. Controlled oxidation of an AlInN interlayer lattice matched to GaN allows confining the i ...

2007

Nanostructuring of surfaces for optical and visual security applications using lithography techniques

Nowadays, the use of micro- or nano-patterned surfaces is well established in wide fields of science and in numerous applications in the industry. Periodic surface-relief profiles with dimensions in the wavelength range of the light can act as diffractive ...

Institut de Microtechnique, Université de Neuchâtel2007

Non-iterative exact signal recovery in frequency domain optical coherence tomography

Michaël Unser, Thierry Blu, Rainer Leitgeb

We address the problem of exact signal recovery in frequency domain optical coherence tomography (FDOCT) systems. Our technique relies on the fact that, in a spectral interferometry setup, the intensity of the total signal reflected from the object is smal ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2007

Non-Iterative Exact Signal Recovery in Frequency Domain Optical Coherence Tomography

Michaël Unser, Thierry Blu, Rainer Leitgeb

IEEE2007

Field confinement with aberration correction for solid immersion lens based fluorescence correlation spectroscopy

Theo Lasser, Rainer Leitgeb, Ramachandra Rao, Jelena Mitic

The solid immersion lens (SIL) as a tool for increasing the field confinement as well as providing optimal performance by aberration compensation in a confocal fluorescence correlation spectroscopy (FCS) system is illustrated here. Using Zernike polynomial ...

2007

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Aperture synthesis

Optofluidic pressure sensor based on interferometric imaging

Iterative method for zero-order suppression in off-axis digital holography

Image Reconstruction in the Gigavision Camera

Compressed sensing imaging techniques for aperture synthesis by radio interferometry

Advanced passive micro-optical elements

Efficient current injection scheme for nitride vertical cavity surface emitting lasers

Nanostructuring of surfaces for optical and visual security applications using lithography techniques

Non-iterative exact signal recovery in frequency domain optical coherence tomography

Non-Iterative Exact Signal Recovery in Frequency Domain Optical Coherence Tomography

Field confinement with aberration correction for solid immersion lens based fluorescence correlation spectroscopy

Graph Chatbot

Chat with Graph Search

Image Reconstruction in the Gigavision Camera

Iterative method for zero-order suppression in off-axis digital holography

Advanced passive micro-optical elements

Efficient current injection scheme for nitride vertical cavity surface emitting lasers

Field confinement with aberration correction for solid immersion lens based fluorescence correlation spectroscopy

Nanostructuring of surfaces for optical and visual security applications using lithography techniques

Non-iterative exact signal recovery in frequency domain optical coherence tomography

Non-Iterative Exact Signal Recovery in Frequency Domain Optical Coherence Tomography

Optofluidic pressure sensor based on interferometric imaging

Compressed sensing imaging techniques for aperture synthesis by radio interferometry