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Constantin Aniculaesei
초강력 레이저과학 연구단
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Observation of laser pulse propagation in optical fibers with a SPAD camera

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Title
Observation of laser pulse propagation in optical fibers with a SPAD camera
Author(s)
Ryan Warburton; Constantin Aniculaesei; Clerici, M; Altmann, Y; Gariepy, G; McCracken, R; Reid, D; McLaughlin, S; Petrovich, M; Hayes, J; Henderson, R; Faccio, D; Leach, J
Publication Date
2017-03
Journal
Scientific Reports, v.7, no., pp.43302 -
Publisher
NATURE PUBLISHING GROUP
Abstract
Recording processes and events that occur on sub-nanosecond timescales poses a difficult challenge. Conventional ultrafast imaging techniques often rely on long data collection times, which can be due to limited device sensitivity and/or the requirement of scanning the detection system to form an image. In this work, we use a single-photon avalanche detector array camera with pico-second timing accuracy to detect photons scattered by the cladding in optical fibers. We use this method to film supercontinuum generation and track a GHz pulse train in optical fibers. We also show how the limited spatial resolution of the array can be improved with computational imaging. The single-photon sensitivity of the camera and the absence of scanning the detection system results in short total acquisition times, as low as a few seconds depending on light levels. Our results allow us to calculate the group index of different wavelength bands within the supercontinuum generation process. This technology can be applied to a range of applications, e.g., the characterization of ultrafast processes, time-resolved fluorescence imaging, three-dimensional depth imaging, and tracking hidden objects around a corner. © The Author(s) 2017
URI
http://pr.ibs.re.kr/handle/8788114/3438
DOI
10.1038/srep43302
ISSN
2045-2322
Appears in Collections:
Center for Relativistic Laser Science(초강력 레이저과학 연구단) > Journal Papers (저널논문)
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