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Warburton R, Aniculaesei C, Clerici M, et al. Observation of laser pulse propagation in optical fibers with a SPAD camera. Sci Rep. 2017;7:43302doi: 10.1038/srep43302.
Warburton, R., Aniculaesei, C., Clerici, M., Altmann, Y., Gariepy, G., McCracken, R., Reid, D., McLaughlin, S., Petrovich, M., Hayes, J., Henderson, R., Faccio, D., & Leach, J. (2017). Observation of laser pulse propagation in optical fibers with a SPAD camera. Scientific reports, 743302. https://doi.org/10.1038/srep43302
Warburton, Ryan, et al. "Observation of laser pulse propagation in optical fibers with a SPAD camera." Scientific reports vol. 7 (2017): 43302. doi: https://doi.org/10.1038/srep43302
Warburton R, Aniculaesei C, Clerici M, Altmann Y, Gariepy G, McCracken R, Reid D, McLaughlin S, Petrovich M, Hayes J, Henderson R, Faccio D, Leach J. Observation of laser pulse propagation in optical fibers with a SPAD camera. Sci Rep. 2017 Mar 07;7:43302. doi: 10.1038/srep43302. PMID: 28266554; PMCID: PMC5339868.
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Sci Rep. 2017 Mar 07;7:43302. doi: 10.1038/srep43302.

Observation of laser pulse propagation in optical fibers with a SPAD camera.

Scientific reports

Ryan Warburton, Constantin Aniculaesei, Matteo Clerici, Yoann Altmann, Genevieve Gariepy, Richard McCracken, Derryck Reid, Steve McLaughlin, Marco Petrovich, John Hayes, Robert Henderson, Daniele Faccio, Jonathan Leach

Affiliations

  1. Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK.
  2. Center for Relativistic Laser Science, Institute for Basic Science (IBS), Gwangju 61005, Republic of Korea.
  3. School of Engineering, University of Glasgow, Glasgow, G12 8LT, UK.
  4. Institute of Sensors, Signals and Systems, Heriot-Watt University, Edinburgh, EH14 4AS, UK.
  5. Optoelectronics Research Centre, University of Southampton, Highfield, Southampton, SO17 1BJ Hampshire.
  6. Institute for Micro and Nano Systems, University of Edinburgh, Alexander Crum Brown Road, Edinburgh EH9 3FF, UK.

PMID: 28266554 PMCID: PMC5339868 DOI: 10.1038/srep43302

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.

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