William Okell joined the Femtosecond Lasers and Timing group at ASTeC in 2019 as a Laser Scientist.  

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During his PhD and postdoctoral research at Imperial College London, William worked on generation and characterisation of few-cycle carrier-envelope phase stable femtosecond laser pulses, and extreme ultraviolet attosecond light pulses. He used these pulses to study electron dynamics in photoemission from solid surfaces on attosecond timescales. William also carried out postdoctoral research at the Max-Planck Institute of Quantum Optics, where he investigated the interaction between light and nanostructures on attosecond timescales, and at the University of Oxford, where he worked on nanoparticle sensing and characterisation using high finesse optical microcavities.  His current work is focused on temporal shaping of ultraviolet pulses for the CLARA photoinjector gun laser system.