Alexis Rochas

ASIC for High-Speed-Gating and Free Running Operation of SPADs (2007)

Rochas, Alexis, Guillaume-Gentil, Christophe, Gautier, Jean-Daniel, Pauchard, Alexandre, Ribordy, Gregoire;, Zbinden, Hugo, ...

Single photon detection at telecom wavelengths is of importance in many industrial applications ranging from quantum cryptography, quantum optics, optical time domain reflectometry, non-invasive...

Design and characterization of a CMOS 3-D image sensor based on single photon avalanche diodes (2005)

Niclass, Cristiano, Rochas, Alexis, Besse, Pierre-André, Charbon, Edoardo

The design and characterization of an imaging system is presented for depth information capture of arbitrary three-dimensional (3-D) objects. The core of the system is an array of 32 × 32...

CMOS imager based on single photon avalanche diodes (2005)

Niclass, Cristiano, Rochas, Alexis, Besse, Pierre-André, Popovic, Radivoje S., Charbon, Edoardo

In this paper we report on a 32×32 optical imager based on single photon avalanche diodes integrated in CMOS technology. The maximum measured dynamic range is 120dB and the minimum noise equivalent...

Toward a 3-D Camera Based on Single Photon Avalanche Diodes (2004)

Niclass, Cristiano, Rochas, Alexis, Besse, Pierre-André, Charbon, Edoardo

A 3D imager is presented capable of computing the depth map as well as the intensity scale of a given scene. The heart of the system is a two-dimensional array of single photon avalanche diodes...

A CMOS single photon avalanche diode array for 3D imaging (2004)

Niclass, Cristiano, Rochas, Alexis, Besse, Pierre-André, Charbon, Charbon

An 8x4 avalanche diode array in a 0.8μm CMOS process uses single photon counting for time-of-light range finding with 100ps 40mW decollimated laser pulses. An accuracy of 618μm is achieved from...

A CMOS 3D camera with millimetric depth resolution (2004)

Niclass, Cristiano, Rochas, Alexis, Besse, Pierre-André, Charbon, Edoardo

A 3D imager is presented capable of capturing the depth map of an arbitrary scene. Depth is measured by computing the time-of-flight of a ray of light as it leaves the source and is reflected by the...