Table 14a, Dielectric Gratings for Laser
Chirped Pulse Compression
In
comparrison with gold coated gratings, dielectric gratings
present:
Higher efficiency
(98%)
Higher damage threshold
The
Grooves are engraved into the multilayer coating
Low index layer
: SiO2
High index layer : HfO2
Measured
performances at LULI (France)
Diffraction efficiency:
E better than 98%
Damage Threshold: Fmax better
than 1.7 Jcm-2 @ i = 72.5deg
(Femto second pulse) Fmax better
than 0.51 Jcm-2 on the gratings
Output Energy Gain: Factor 3 improvement
in comparison with gold coated gratings
Efficiency
Curves
The
relative efficiency curves avaible on our website describe
the pseudo-littrow efficiency behaviour of a particular grating
and is not meant to be a specification. Actual grating performance
will vary and is dependent on user geometry, coating selection
and thickness, etc.
In
comparrison with gold coated gratings, dielectric gratings
present:
The
Grooves are engraved into the multilayer coating
Measured
performances at LULI (France)
