Single Photon Avalanche Diodes: Towards the Large Bidimensional Arrays

Area of Science:

• Photonics
• Semiconductor Devices
• Quantum Optics

Background:

• Single photon detection is critical for advancing ultra-fast and low-intensity phenomena research.
• Applications in bio-imaging, bio-luminescence, and bio-scattering demand high-speed operation and precise timing resolution.
• Next-generation single photon avalanche diodes (SPADs) are being developed to meet these demanding requirements.

Purpose of the Study:

• To design and characterize novel bi-dimensional arrays of next-generation single photon avalanche diodes (SPADs).
• To evaluate the performance metrics of individual SPADs, including sensitivity, dark noise, afterpulsing, and timing resolution.
• To investigate the impact of SPAD integration and readout modes on overall array performance.

Main Methods:

• Fabrication and characterization of bi-dimensional SPAD arrays.
• Experimental evaluation of single SPAD performance under various conditions.
• Analysis of integrated array behavior and readout electronics.

Main Results:

• Demonstration of single photon sensitivity in the developed SPADs.
• Detailed analysis of dark noise, afterpulsing, and timing resolution.
• Investigation into the effects of array integration and readout strategies.

Conclusions:

• The characterized bi-dimensional SPAD arrays show promise for advanced photon detection.
• Performance metrics indicate suitability for applications requiring high speed and timing resolution.
• Further research into integration and readout modes can optimize SPAD array performance.