synergies between accelerators, lasers and plasma 71
corrected, either by special optic arrangements and appropriate placement of sextupole pairs, or by higher-order magnets.
4.3.4 Compression of beam and laser pulses
Energy-z correlation is used
Compression of laser pulses relies on the dependence of the to compress/stretch either
light reflection angle from the grating on the light wave- laser pulse or particle bunch
length, in the case when the grating spacing is comparable to — this is one more general
the wavelength. This produces an optical system where the principle of AS-TRIZ.
path length through the system depends on the light’s wavelength.
FIGURE 4.28
Laser pulse stretcher.
The combination of a pair of grated plates, lenses and
mirrors can create a laser pulse stretcher — as realized in
Fig. 4.28.
Equally, a laser pulse compressor can be arranged with a
pair of gratings, as shown in Fig. 4.29.
The optical telescope placed
inside the pulse stretcher is
needed in order to provide a
FIGURE 4.29
“negative distance” between
Laser pulse compressor.
the gratings.