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|Title:||Pseudo-random single photon counting: The principle, simulation, and experimental results|
|Keywords:||Pseudo-random bit sequence|
Single photon counting
|Source:||Zhang, Q., Chen, N.G. (2009). Pseudo-random single photon counting: The principle, simulation, and experimental results. Progress in Biomedical Optics and Imaging - Proceedings of SPIE 7170 : -. ScholarBank@NUS Repository. https://doi.org/10.1117/12.807793|
|Abstract:||Time-correlated single photon counting (TCSPC) is popular in time resolved techniques due to its prominent performance such as ultra-high time resolution and ultra-high sensitivity. However, this technique is limited by low counting rate and high system cost. In this paper, we report a new time-resolved optical measurement method which aims to achieve faster data acquisition without losing the key benefits of TCSPC. The new method is based on the spread spectrum time-resolved optical measurement method combined with single photon counting. A pseudo-random bit sequence is used to modulate a continuous wave laser diode, while the pulse sequence in response to the modulated excitation is recorded by a single photon detector. The impulse response is then retrieved by periodic cross-correlation. Both simulation and experimental work have been conducted to validate our approach. Experimental results with our prototype have shown a time-resolution better than 200 picoseconds. Besides the faster data acquisition and high timeresolution, the new method also affords other benefits such as portability and low cost. © 2009 SPIE.|
|Source Title:||Progress in Biomedical Optics and Imaging - Proceedings of SPIE|
|Appears in Collections:||Staff Publications|
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