Direct observation of light in flight is enabled by recent avalanche photodiode arrays, which have the capability for time-correlated single photon counting. In contrast to classical imaging, imaging of light in flight depends on the relative sensor position, which is studied in detail by measurement and analysis of light pulses propagating at different angles. The time differences of arrival are analyzed to determine the propagation angle and distance of arbitrary light paths. Further analysis of the apparent velocity shows that light pulses can appear to travel at superluminal or subluminal apparent velocities.
© 2016 Optical Society of AmericaFull Article | PDF Article
22 April 2016: A correction was made to Ref. 24.
More Like This
Yue Zheng, Ming-Jie Sun, Zhi-Guang Wang, and Daniele Faccio
Photon. Res. 8(7) 1072-1078 (2020)
Imogen Morland, Feng Zhu, Germán Mora Martín, Istvan Gyongy, and Jonathan Leach
Opt. Express 29(14) 22504-22516 (2021)
Martin Laurenzis, Jonathan Klein, Emmanuel Bacher, and Nicolas Metzger
Opt. Lett. 40(20) 4815-4818 (2015)