Patent ID: 9648713
Date: 2017-05-09
CPC Classifications: H01S,H05G,H05H

Claim:
1. Apparatus for producing X-rays, the apparatus comprising: at least one source of optical radiation configured to emit pulses of optical radiation; focusing optics configured to bring two counter-propagating pulses of the optical radiation to a common line focus; an electron source configured to provide an electron beam aligned with the line focus; wherein the focusing optics include one or more dispersive optical elements configured to introduce a tilt angle between phase fronts of the counter-propagating pulses and pulse fronts of the counter-propagating pulses; wherein the tilt angle is selected to substantially match a velocity of pulse front propagation along the line focus with an electron velocity of the electron beam along the line focus; and wherein a standing wave pattern formed by the counter-propagating pulses at the line focus acts as an undulator for emission of X-rays by electrons in the electron beam.