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Single-Photon Imaging


ISSCC official website recently published the videos which have been recorded during the demo session at ISSCC 2015:

IRIS research unit was there with a fluorescence lifetime imaging prototype linked to the paper presented in session 11:

"A 160×120-Pixel Analog-Counting Single-Photon Imager With Sub-ns Time-Gating and Self-Referenced Column-Parallel A/D Conversion for Fluorescence Lifetime Imaging"

The University Trento and IRIS won the price for best poster at the "Bioimaging: From Multiphoton Excitation Microscopy to Optical Nanoscopy and Biophotonics" conference  held in Genoa on Oct. 14-15 with the poster "Towards comparative functional brain imaging via fast two-photon FLIM"! Hurray!!!

Two letter papers have recently been published by the IRIS group.

A paper on a very small and efficient TDC, suitable for arrayed applications, has been published in Electronics Letters:

M. Perenzoni, H. Xu, D. Stoppa, 'Small area 0.3 pJ/conv, 45 ps time-to-digital converter for arrays of silicon photomultiplier interfaces in 150 nm CMOS', Electronics Letters, 2015

while the following letter is the result of a fruitful cooperation with CNR-NEST in Pisa:

The Researchers' Night 2015, held on the 25th of September, was a great success!

We really would like to thank the hundreds of you who visited our booth and got excited together with us about science! It has been really a wonderful experience also for us in getting in touch with all of you.

Stay tuned as we won't miss the chance to grab your attention even more at the next event!

In the framework of the SiQuro project, FBK-IRIS and University of Trento developed a patented technology able to exploit the quantum nature of light in order to generate truly random numbers, a fundamental brick in cryptography, in an extremely compact footprint.

The local newspaper talks about us in this article.

IRIS will be present at the IISW next week in Vaals (The Netherlands) with the 7.17 poster "Compact time-gated analog counting SPAD-based pixels for high resolution, single-photon, time-resolved imagers". Meet you there!

The SPADNet project has successfully achieved its objectives with excellent results: the IRIS research unit is proud of having been part of this amazing collaboration and having taken part in the development of such a powerful technology.


MILA (Miniaturized Imaging Laser Altimeter) is an ESA project aiming at the development of a compact imaging altimeter for the future ESA mission in order to provide a support for the global navigation system in the approach and landing of flying spacecrafts.

Molecular imaging (MI) and Proton Therapy (PT) have become fundamental tools for the diagnosis and treatment of diseases such as cancer. Innovation in this field is very strong aiming at improving the imaging capability. The most important development over the last few years is the use of a novel solid-state photo-detector (Silicon Photomultipliers, SiPMs) that can replace the traditional vacuum-based photo-multiplier tubes. This sensor opens the possibility to combine different imaging modalities and to develop compact, light and portable systems with higher performance.


Fluorescence Lifetime Imaging Microscopy (FLIM) is a powerful tool for the analysis of biological samples, enabling the extraction of more information by detecting not only the intensity of the fluorescence but also its lifetime.