Demonstration of the echo-enabled harmonic generation technique for short-wavelength seeded free electron lasers.
We report the first experimental demonstration of the echo-enabled harmonic generation technique, which holds great promise for generation of high-power, fully coherent short-wavelength radiation. In this experiment, coherent radiation at the 3rd and 4th harmonics of the second seed laser is generated from the so-called beam echo effect. The experiment confirms the physics behind this technique and paves the way for applying the echo-enabled harmonic generation technique for seeded x-ray free electron lasers.
Xiang
D
D
SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
Colby
E
E
Dunning
M
M
Gilevich
S
S
Hast
C
C
Jobe
K
K
McCormick
D
D
Nelson
J
J
Raubenheimer
T O
TO
Soong
K
K
Stupakov
G
G
Szalata
Z
Z
Walz
D
D
Weathersby
S
S
Woodley
M
M
Pernet
P-L
PL