Abstract
For a real, meaningful pump-probe experiment with attosecond temporal resolution, an isolated attosecond pulse is in demand. In this vein we report the generation of an isolated ~ 148 attosecond pulse duration radiation pulse at 0.1 angstrom wavelength using current enhanced self-amplified spontaneous emission free electron laser. We consider the 10-GeV PAL-XFEL e-beam for enhanced self-amplified spontaneous emission (ESASE) scheme. In ESASE, X-ray SASE FEL is combined with a femtosecond laser system. An 800 nm wavelength, 5 fs FWHM carrier envelope phase stabilized laser was employed in ESASE scheme.
Highlights
Current synchrotrons are limited up to picosecond time duration x-ray pulses, which are not capable to follow the electron dynamics in atoms, molecules and nanoscopic systems
In this vein we report the generation of an isolated ~ 148 attosecond pulse duration radiation pulse at 0.1 angstrom wavelength using current enhanced self-amplified spontaneous emission free electron laser
An 800 nm wavelength, 5 fs FWHM carrier envelope phase stabilized laser was employed in enhanced self-amplified spontaneous emission (ESASE) scheme
Summary
Current synchrotrons are limited up to picosecond time duration x-ray pulses, which are not capable to follow the electron dynamics in atoms, molecules and nanoscopic systems. These investigations demand tools with attosecond temporal and nanometer spatial resolutions. In the hard x-ray region, LCLS at Stanford Linear accelerator (SLAC) is the first hard x-ray FEL machine, which is in operation since 2009 This facility has tunable radiation wavelength from 2.2 to 0.12 nm by varying the electron energy in the range of 3.5 to 15 GeV [6].The interaction of carrier envelope phase (CEP) stabilized few-cycle laser with electron-bunch in a wiggler magnet with single or double period prior to x-ray undulator in SASE FEL was employed. It was noticed that the interaction plays a vital role for the generation of isolated attosecond x-ray pulses with FEL [7,8,9]
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