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Ultrafast laser generation of hard X-rays

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1 Author(s)
J. D. Kmetec ; E.L. Ginzton Lab., Stanford Univ., CA, USA

Efficient generation of X-rays above 20 keV was demonstrated when the tight focus of a 60-mJ, 120-fs laser was incident on a solid. It is estimated that 0.3% of the laser energy is converted to X-rays between 20 and 1000 keV when the target is solid tantalum. At least 106 photons above 1 MeV are generated with each shot. The X-ray yield is proportional to the Z of the target, and scales as the 3/2 power of the incident laser energy

Published in:

IEEE Journal of Quantum Electronics  (Volume:28 ,  Issue: 10 )