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

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 acquisiti

SUBMITTER: Warburton R 

PROVIDER: S-EPMC5339868 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature