Concept

Fourier optics

Related publications (91)

Longitudinal-differential interferometry: direct imaging of axial superluminal phase propagation

Hans Peter Herzig, Toralf Scharf, Myun Sik Kim

We introduce and demonstrate a new interferometric method called longitudinal-differential (LD) interferometry, which measures the spatially resolved phase difference of the scattered field by an object relative to the illumination. This method is combined ...

Optical Society of America2012

Single shot dual wavelength full field imaging in low coherence digital holographic microscopy

Christian Depeursinge, Christophe Moser, Frédéric Montfort, Zahra Monemhaghdoust

In off-axis digital holographic microscopy, short coherence length of the source results in an unwanted reduced field of view. A diffractive optical element (DOE) which combines two high efficiency transmission volume phase gratings holographically recorde ...

Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa2012

Computing exact Fourier series coefficients of IC rectilinear polygons from low-resolution fast Fourier coefficients

Paul Hurley, Robin Scheibler

We present a novel, accurate and fast algorithm to obtain Fourier series coecients from an IC layer whose description consists of rectilinear polygons on a plane, and how to implement it using o-the-shelf hardware components. Based on properties of Fourier ...

2012

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

Simultaneous self-sustained actuation and parallel readout with MEMS cantilever sensor array

Yusuf Leblebici

Parallel readout of a microcantilever array using single magnetic actuator and a single photo detector for concurrent detection is reported. The system includes MEMS cantilever array designed for different resonance frequencies, optical elements for laser ...

2012

High Time-Resolved Cardiac Functional Imaging Using Temporal Regularization for Small Animal on a Clinical 3T Scanner

Dimitri Nestor Alice Van De Ville, Jean-Noël Hyacinthe

Accurate assessment of mice cardiac function with magnetic resonance imaging is essential for longitudinal studies and for drug development related to cardiovascular diseases. Whereas dedicated small animal MR scanners are not readily available, it would b ...

2012

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

Dual wavelength full field imaging in low coherence digital holographic microscopy

Christian Depeursinge, Christophe Moser, Frédéric Montfort, Zahra Monemhaghdoust

A diffractive optical element (DOE) is presented to simultaneously manipulate the coherence plane tilt of a beam containing a plurality of discrete wavelengths. The DOE is inserted into the reference arm of an off-axis dual wavelength low coherence digital ...

Optical Society of America2011

Shaping Light with MOEMS

Nico de Rooij, Hans Peter Herzig, Roland Andreas Bitterli, Jonathan Masson, Toralf Scharf, Wilfried Noell

Shaping light with microtechnology components has been possible for many years. The Texas Instruments digital micromirror device (DMD) and all types of adaptive optics systems are very sophisticated tools, well established and widely used. Here we present, ...

Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa2011

Measuring amplitude and phase of light emerging from microstructures with HRIM

Hans Peter Herzig, Toralf Scharf, Myun Sik Kim

Ultra high-resolution measurements of amplitude and phase fields emerging from fine period amplitude gratings are presented and discussed. In the axial direction periodically repeated features are found, whose origins are the Talbot effect within the Fresn ...

SPIE Digital Library2011

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