Table 14, Gratings for Laser Chirped
Pulse Compression
When
used to either compress or stretch a chirped laser pulse
it is necessary to employ two gratings as a pair. In this
application maximum energy densities are desired, so damage
resistance and good focusing is required.
Specifications
Gold
coated.
Optimised wavelengths: 1.06/1.053µm or 750-850nm.
High dispersion - 65 deg Littrow angle.
Surface flatness better than lambda/8.
Damage threshold: min 250mJ/sq.cm (ns or ps pulse).
Efficiency 90 % to 95 % for E perpendicular polarisation
at blaze wavelength.
Pulse
Compression Gratings
Blank
Size
(mm)
1200
gr/mm
(750 to 850 nm)
1200
gr/mm
(1.05µm)
1480
gr/mm
(750 to 850 nm)
1480
gr/mm
(1.05µm)
1740
gr/mm
(750 to 850 nm)
1740
gr/mm
(1.05µm)
1800
gr/mm
(750 to 850 nm)
1800
gr/mm
(1.05µm)
2000
gr/mm
(700 to 850nm)
40
x 60 x 10
524
26 090
524
27 090
524
28 090
524
29 090
524
20 090
524
21 090
524
24 090
524
25 090
524
23 090
80
x 110 x 16
524
26 160
524
27 160
524
28 160
524
29 160
524
20 160
524
21 160
524
24 160
524
25 160
524
23 160
110
x 110 x 16
524
26 180
524
27 180
524
28 180
524
29 180
524
20 180
524
21 180
524
24 180
524
25 180
524
23 180
120
x 140 x 20
524
26 200
524
27 200
524
28 200
524
29 200
524
20 200
524
21 200
524
24 200
524
25 200
524
23 200
165
x 220 x 10
524
26 223
524
27 223
524
28 223
524
29 223
524
20 223
524
21 223
524
24 223
524
25 223
524
23 223
190
x 350 x 50
524
26 505
524
27 505
524
28 505
524
29 505
524
20 505
524
21 505
524
24 505
524
25 505
524
23 505
210
x 420 x 50
524
26 525
524
27 525
524
28 525
524
29 525
524
20 525
524
21 525
524
24 525
524
25 525
524
23 525
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.
When
used to either compress or stretch a chirped laser pulse
it is necessary to employ two gratings as a pair. In this
application maximum energy densities are desired, so damage
resistance and good focusing is required.
