|Ph.D Student||Savuskan Vitali|
|Subject||Single Photon Avalanche Diode (Spad) Characterization and|
|Department||Department of Electrical Engineering||Supervisor||Professor Emeritus Yael Nemirovsky|
|Full Thesis text|
Avalanche photodiodes (APDs) operating above breakdown are known as Geiger mode APDs. They offer many advantages in terms of single photon response, high gain at low bias voltage, high detection efficiency and fast timing response. Photon counting detectors may find many applications where the detection of very weak and fast optical signals is required. Geiger mode silicon single photon avalanche photodiodes (SPAD) arrays may provide a possible alternative to vacuum multiplier tubes but are still not available commercially. The fundamental topics of Geiger mode single photon avalanche photodiodes implemented in CMOS technology were extensively delved into, including: operating principles, figures of merit, ancillary circuitry and applications. The research has yielded high performance, low noise and high detection efficiency, SPADs. SPAD application oriented ancillary circuitry was developed both for in-pixel and beyond the pixel usage. Novel methodologies in detector design and operation were devised. Finally, novel 2D SPAD imager demonstrators were designed, manufactured and tested.