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Opt Express. 2011 Apr 11;19(8):7537-45. doi: 10.1364/OE.19.007537.

Generation of isolated single attosecond hard X-ray pulse in enhanced self-amplified spontaneous emission scheme.

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  • 1Department of Physics, Pohang University of Science and Technology (POTECH), Pohang, 790-784, South Korea.


The generation of isolated attosecond hard x-ray pulse has been studied under the enhanced self-amplified spontaneous emission (ESASE) scheme with the density and energy modulation of an electron bunch. It is demonstrated in simulation that an isolated attosecond hard x-ray pulse of a high contrast ratio can be produced by adjusting a driver laser wavelength and the energy distribution of an electron bunch. An isolated attosecond pulse of ~146 attosecond full-width half-maximum (FWHM) at 0.1 nm wavelength is obtained with a saturation length of 34 meter for the electron beam parameters of Korean X-ray Free Electron laser.

© 2011 Optical Society of America

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