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Low-coherence interferometry based on customized detector arrays

Publications associées (60)

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Recent progress in wafer-fused VECSELs emitting in the 1310nm and 1550nm bands

Elyahou Kapon, Nicolas Volet, Alexandru Mereuta, Vladimir Iakovlev, Alexei Sirbu, Andrei Caliman, Kamil Pawel Pierscinski

Recent developments of wafer-fused long-wavelength VECSELs resulted in reaching record high CW output power of 6.6 W at 1300 nm and a coherence length longer than 5 km in fiber and 1 Watt of output power in single frequency regime at 1550 nm. First wafer-f ...

SPIE, Vol. 8606, pp. , 20132013

Automatic and Accurate Shadow Detection using Near-Infrared Information

Sabine Süsstrunk, Dominic Rüfenacht

We present a method to automatically detect shadows in a fast and accurate manner by employing the inherent sensitivity of digital camera sensors to the near-infrared (NIR) part of the spectrum. Shadows are generally found in the dark parts of an image, be ...

2012

The Gigavision Camera: A 2Mpixel Image Sensor with 0.56um2 1-T Digital Pixels

Edoardo Charbon, Hyungjune Yoon

We present a CMOS image sensor with deep-subwavelength, digital 1-T pixels designed for use in a digital film concept known as Gigavision (GV) camera. In GV, the levels of gray in the picture are derived from the concentration of activated pixels. Activate ...

2011

High Frame-rate TCSPC-FLIM Using a Novel SPAD-based Image Sensor

Edoardo Charbon, Marek Gersbach, Matthew Fishburn

Imaging techniques based on time-correlated single photon counting (TCSPC), such as fluorescence lifetime imaging microscopy (FLIM), rely on fast single-photon detectors as well as timing electronics in the form of time-to-digital or time-to-analog convert ...

Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa2010

Automatic and accurate shadow detection from (potentially) a single image using near-infrared information

Sabine Süsstrunk

Shadows, due to their prevalence in natural images, are a long studied phenomenon in digital photography and computer vision. Indeed, their presence can be a hindrance for a number of algorithms; accurate detection (and sometimes subsequent removal) of sha ...

EPFL Tech Report 1655272010

Extended Focus Optical Coherence Microscopy

Martin Villiger

Optical coherence tomography (OCT) is an interferometric imaging technique that can provide depth resolved cross-sectional views of biological tissue. OCT employs light with low temporal and yet high spatial coherence. The sample is illuminated point by po ...

EPFL2010

A method for controlling the spectral response of light sensitive semiconductor elements in an array (8) using an electric control signal (Vop) applied to said semiconductor elements. The light sensitive semiconductor elements could be a single photon aval ...

2010

SwissCube: The First Entirely-Built Swiss Student Satellite with an Earth Observation Payload

Maurice Borgeaud, Noémy Scheidegger, Ted Choueiri, Fabien Jordan, Nicolas Steiner

In 2006, Ecole Polytechnique Federale de Lausanne (EPFL) in cooperation with other Swiss academic and industrial partners started the Swiss Cube project based on the Cube Sat program. The primary objective of the Swiss Cube project is to provide a dynamic ...

Springer-Verlag New York, Ms Ingrid Cunningham, 175 Fifth Ave, New York, Ny 10010 Usa2010

Measurement of the coherent transfer function

Theo Lasser, Christophe Pache, Martin Villiger

It is important to characterize and quantify the imaging performance of optical coherence tomography (OCT) and especially optical coherence microscopy (OCM) systems for validation and calibration of the setup. We suggest using a simple rubber surface, pres ...

2010

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To evaluate the severity of airway pathologies, quantitative dimensioning of airways is of utmost importance. Endoscopic vision gives a projective image and thus no true scaling information can be directly deduced from it. In this article, an approach base ...

2010