High-Performance SiPM Detection Module for Ultra-Fast Time-Resolved Measurements.

Area of Science:

• Biomedical optics
• Photonics
• Light-matter interaction analysis

Background:

• Non-invasive light-matter interaction analysis is rapidly advancing in biomedical and life sciences, driven by low-intensity light detection.
• Single-photon detection techniques, particularly Time-Correlated Single-Photon Counting (TCSPC), are crucial for analyzing complex photonic applications.
• Conventional TCSPC is limited by pile-up distortion, restricting acquisition speed and signal fidelity.

Purpose of the Study:

• To introduce a novel TCSPC acquisition methodology that overcomes limitations of conventional implementations.
• To develop a single-photon detection module for improved TCSPC performance.
• To enable distortion-free reconstruction of light profiles independent of photodetector dead time and excitation intensity.

Main Methods:

• Development of a novel TCSPC acquisition methodology.
• Implementation of a single-photon detection module using a Silicon Photomultiplier.
• Performance evaluation through fluorescence measurements using the constraint-free TCSPC methodology.

Main Results:

• The developed Silicon Photomultiplier module provides 750 ps FWHM output pulses with a 33.5 ps RMS Instrument Response Function (IRF).
• The constraint-free TCSPC methodology achieved a photon count rate up to 166% of the excitation frequency.
• Minimal lifetime estimation error of -1.46% was recorded, demonstrating high accuracy.

Conclusions:

• The novel TCSPC methodology and Silicon Photomultiplier module significantly enhance the capabilities of time-resolved optical signal analysis.
• This advancement overcomes critical limitations of traditional TCSPC, enabling higher acquisition speeds and improved accuracy.
• The developed system holds promise for transforming biomedical and life science research reliant on precise light detection.