Publications de Kazuhiro Morimoto

Radiation Hardness Study of Single-Photon Avalanche Diode for Space and High Energy Physics Applications

Edoardo Charbon, Francesco Gramuglia, Kazuhiro Morimoto, Ekin Kizilkan, Pouyan Keshavarzian, Ming-Lo Wu, Carlo Alberto Fenoglio, Emanuele Ripiccini

The radiation hardness of 180 nm complementary metal-oxide-semiconductor (CMOS) and 55 nm bipolar-CMOS-double-diffused MOS single-photon avalanche diodes (SPADs) is studied using 10 MeV and 100 MeV protons up to a displacement damage dose of 1 PeV/g. It is ...

MDPI2022

A Scaling Law for SPAD Pixel Miniaturization

Edoardo Charbon, Kazuhiro Morimoto

The growing demands on compact and high-definition single-photon avalanche diode (SPAD) arrays have motivated researchers to explore pixel miniaturization techniques to achieve sub-10 μm pixels. The scaling of the SPAD pixel size has an impact on key perfo ...

2021

Superluminal Motion-Assisted Four-Dimensional Light-in-Flight Imaging

Edoardo Charbon, Kazuhiro Morimoto, Andrei Ardelean, Ming-Lo Wu

Advances in high-speed imaging techniques have opened new possibilities for capturing ultrafast phenomena such as light propagation in air or through media. Capturing light in flight in three-dimensional xyt space has been reported based on various types o ...

American Physical Society2021

Fluorescence lifetime imaging with a megapixel SPAD camera and neural network lifetime estimation

Claudio Bruschini, Edoardo Charbon, Kazuhiro Morimoto, Ming-Lo Wu

Fluorescence lifetime imaging microscopy (FLIM) is a key technology that provides direct insight into cell metabolism, cell dynamics and protein activity. However, determining the lifetimes of different fluorescent proteins requires the detection of a rela ...

NATURE RESEARCH2020

Megapixel time-gated SPAD image sensor for 2D and 3D imaging applications

Claudio Bruschini, Edoardo Charbon, Ivan Michel Antolovic, Arin Can Ülkü, Kazuhiro Morimoto, Andrei Ardelean, Ming-Lo Wu

We present a 1 Mpixel single-photon avalanche diode camera featuring 3.8 ns time gating and 24 kips frame rate, fabricated in 180 nm CMOS image sensor technology. We designed two pixels with a pitch of 9.4 mu m in 7 T and 5.75 T configurations respectively ...

2020

Megapixel SPAD cameras for time-resolved applications

Kazuhiro Morimoto

Progress in optics technology has enriched our daily lives in many ways. Various types of single-photon detector technologies have emerged in the last century. Among these, single-photon avalanche diode (SPAD) technology outperforms other detectors for its ...

EPFL2020

High fill-factor miniaturized SPAD arrays with a guard-ring-sharing technique

Edoardo Charbon, Kazuhiro Morimoto

We present a novel guard-ring-sharing technique to push the limit of SPAD pixel miniaturization, and to demonstrate the operation of SPAD arrays with a 2.2 mu m-pitch, the smallest ever reported. Device simulation and preliminary tests suggest that the opt ...

2020