10.6084/m9.figshare.1012362.v1
T Sato
T
Sato
T Togashi
T
Togashi
K Yamakawa
K
Yamakawa
M Aoyama
M
Aoyama
K Midorikawa
K
Midorikawa
E J Takahashi
E
J Takahashi
K Yamanouchi
K
Yamanouchi
S Owada
S
Owada
A Iwasaki
A
Iwasaki
K Fukami
K
Fukami
Spectral distribution of the free electron laser (FEL) pulses at 53.4 nm obtained with the 15th-order harmonic seed pulses after accumulating the date for 3000 shots of FEL
IOP Publishing
2013
contrast ratio
test accelerator
fel
scss
3000 shots
amplification processes
3000 spectra
sase
electron bunch duration
nm
wavelength region
seed pulses
femtosecond laser pulses
electron laser
electron bunches
riken
Atomic Physics
Molecular Physics
2013-08-13 00:00:00
Figure
https://iop.figshare.com/articles/figure/_Spectral_distribution_of_the_free_electron_laser_FEL_pulses_at_53_4_nm_obtained_with_the_15th_order/1012362
<p><strong>Figure 3.</strong> Spectral distribution of the free electron laser (FEL) pulses at 53.4 nm obtained with the 15th-order harmonic seed pulses after accumulating the date for 3000 shots of FEL. In the presentation of the 3000 spectra recorded during the period of 100 s, the spectra of 30 consecutive shots are averaged, and the 100 averaged spectra are plotted.</p> <p><strong>Abstract</strong></p> <p>By introducing 13th- (61.7 nm) and 15th-order harmonics (53.4 nm) of femtosecond laser pulses at 800 nm into an undulator of SCSS (SPring-8 Compact SASE Source) test accelerator at RIKEN, these harmonic pulses were amplified by a factor of more than 10<sup>2</sup> with a high contrast ratio through the interaction between accelerated electron bunches and the harmonic pulses. From numerical simulations of the amplification processes of high-order harmonic pulses in the undulator, optimum conditions of the electron bunch duration interacting with the high-order harmonic pulses were investigated for generating full-coherent and intense pulses in the extreme ultraviolet wavelength region.</p>