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Title: Pseudo-random single photon counting: The principle, simulation, and experimental results
Authors: Zhang, Q.
Chen, N.G. 
Keywords: Pseudo-random bit sequence
Single photon counting
Spread spectrum
Time resolved
Issue Date: 2009
Citation: 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.
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
ISBN: 9780819474162
ISSN: 16057422
DOI: 10.1117/12.807793
Appears in Collections:Staff Publications

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