About the Authors

Michael Hirsch

Michael.Hirsch@stfc.ac.uk

Affiliation Central Laser Facility, Research Complex at Harwell, STFC Rutherford Appleton Laboratory, Harwell Oxford, Didcot, United Kingdom

Richard J. Wareham

Affiliation Department of Engineering, University of Cambridge, Cambridge, United Kingdom

Marisa L. Martin-Fernandez

Affiliation Central Laser Facility, Research Complex at Harwell, STFC Rutherford Appleton Laboratory, Harwell Oxford, Didcot, United Kingdom

Michael P. Hobson

Affiliation Department of Physics, University of Cambridge, Cambridge, United Kingdom

Daniel J. Rolfe

Affiliation Central Laser Facility, Research Complex at Harwell, STFC Rutherford Appleton Laboratory, Harwell Oxford, Didcot, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: M. Hirsch RW M. Hobson DR. Performed the experiments: M. Hirsch. Analyzed the data: M. Hirsch RW. Contributed reagents/materials/analysis tools: M. Hirsch RW MM-F DR. Wrote the paper: M. Hirsch DR.