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Related Experiment Video

Updated: Feb 19, 2026

Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera

Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera

Published on: December 27, 2018

Note: Large active area solid state photon counter with 20 ps timing resolution and 60 fs detection delay stability.

Ivan Prochazka¹, Jan Kodet¹, Johann Eckl²

¹Czech Technical University in Prague, Brehova 7, 115 19 Prague, Czech Republic.

The Review of Scientific Instruments

|November 3, 2017

Summary

This study presents a new photon counting detector system using single photon avalanche diode technology. It achieves exceptional timing resolution and stability for applications in laser ranging and metrology.

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Last Updated: Feb 19, 2026

Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera

Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera

Published on: December 27, 2018

$Studying Soft-matter and Biological Systems over a Wide Length-scale from Nanometer and Micrometer Sizes at the Small-angle Neutron Diffractometer KWS-2$

Studying Soft-matter and Biological Systems over a Wide Length-scale from Nanometer and Micrometer Sizes at the Small-angle Neutron Diffractometer KWS-2

Published on: December 8, 2016

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

Area of Science:

Photonics and Detector Technology
Solid-State Physics
Metrology

Background:

Photon counting detectors are crucial for high-precision measurements.
Existing technologies face limitations in timing resolution and stability.
Advanced applications require detectors with enhanced performance characteristics.

Purpose of the Study:

To design, construct, and evaluate a novel photon counting detector system.
To optimize the system for superior timing resolution and detection delay stability.
To explore its suitability for demanding applications like space laser ranging and fundamental metrology.

Main Methods:

Utilized single photon avalanche diode (SPAD) detector technology on silicon (K14).
Implemented active quenching and gating modes for sensor operation.
Developed and integrated a new control circuit for timing optimization.

Main Results:

Achieved timing resolution of 20 ps Full Width at Half Maximum (FWHM).
Demonstrated exceptional detection delay stability with temperature change as low as 70 fs/K.
Attained detection delay stability better than 60 fs (time deviation).
Photon detection probability exceeds 40% between 500-800 nm.

Conclusions:

The developed photon counting detector system offers state-of-the-art timing performance.
Its high stability and resolution make it ideal for laser ranging and metrology.
This solid-state detector represents a significant advancement in photon counting technology.