[PDF] Top 20 Frequency modulated free electron laser

... Free Electron Laser (FEL) is currently the world’s brightest source of X-rays by many orders of magnitude ...relativistic electron beam injected through a magnetic undulator with a ... See full document

... An electron beam passing through a slow wave structure is unstable to an electromagnetic perturbation whose phase velocity equals the velocity of the ...Cerenkov free electron laser (CFEL) ... See full document

... seed laser pulse. In this direct backscatter geometry the pump laser is collided with a counter-propagating injected short seed laser in- side the ...seed laser frequency is downshifted ... See full document

... The electron beams of a LPA typically have a smaller transverse emittance, a large energy spread and tend to be of shorter duration and higher current than conventional Radio Frequency (RF) ...an ... See full document

... resonant frequency shifts when a sub-wavelength object is placed in the ...of frequency shift is related to the field strength at the objects position, thus allowing the fields to be mapped at any accessible ... See full document

... the electron beam dynamics downstream of BC1, for a configuration of one active bunch compressor ...charge electron beam that is shortened by about a CF ...temporally modulated at the end of the ... See full document

... the electron wavefunction over the same interval which inhibits electron diffusion throughout the ...the electron motion means the beam current profile on the order of the resonant wavelength is ... See full document

... generate electron beamlets is seen to increase the exponential growth rate over the normal FEL interaction by a factor of approximately ...rectangular electron beams are seen not to have an exponential ... See full document

... In addition to this enhanced spectral brightness, the secondary, interleaved modes that were present in the energy modulated mode-locked case have been eliminated. Despite the fact that there was an initial energy ... See full document

... manipulates electron pulse phase space using two temporally coherent, long wavelength seed lasers and two dispersive ...first modulated by a seed laser in an undulator and then dispersed in a ...the ... See full document

... the electron beam energy, and the current modulation that results, can also be a significant source of coherent spontaneous emission (CSE), another process not modelled by averaged ...increased frequency ... See full document

... single frequency cannot be maintained at resonance for the full undulator ...a frequency emitted from the tail of the electron beam as it slips to the head of the electron ...lower ... See full document

... the electron sources for synchrotrons since their conception, but cannot be used to produce the high brightness beams required for short wavelength, high power ...continuous electron beams. There is ... See full document

... A fixed simulation window of width 45 μ m contained a uniform plasma of width 40 μ m. The pump wavelength was chosen as a compromise between better efficiencies at longer wavelengths but shorter final pulse durations at ... See full document

... one electron beam at two distinct, harmonically uncoupled, wavelengths is perhaps not an immediately intuitive ...the electron phase-space evolution has a rich structure, including bunching at the sum and ... See full document

... page sections. By making the slippage in undulator-chicane module equal the beam separation the radiation pulse will continuously interact with electrons within the same energy range. One method to generate a similar ... See full document

... its frequency spectrum in the quantum regime ( ρ < ¯ 1) are shown in ...a frequency spectrum which evolves as series of discrete, narrow ...the frequency separation between these lines is ∆ω = ~ k ... See full document

... a laser beam with a variable wavelength in the mid-infrared region ...An electron beam generated by a high- radio-frequency (RF) electron gun (2856 MHz) is accelerated to a maximum energy of ... See full document

... overall laser cavity circumference is about L = 600 ...cavity free spectral range—FSR = 500 ...a laser beam is achieved using a design form of an optical ...the laser beam (Z-axis) as in ... See full document

... Electron ionization of adamantane produces a prominent mass peak at m/z 79 (see Figure 1). An obvious candidate structure for this fragment is protonated benzene, but alternative structures are not a priori ... See full document