© 2008 Fraunhofer IAF |
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Diamond laser windows |
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The
exit window of CO2 laser systems
conventionally consists of
ZnSe. At high-power
levels, however, the residual
absorption of ZnSe results in the formation
of a thermal lens which strongly
affects the beam quality and the
position of the laser focus.
In this context CVD diamond laser
windows have gained significant
importance. Due to the high thermal
conductivity, low dn/dT and excellent
infrared transparency this material
can handle much higher power levels
without any deteriorating effect on
the laser beam.
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| Available options: |
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| Type |
Either transmitting
window (e.g.
diffusion-cooled slab laser)
or partially reflecting
mirror (e.g. gas flow lasers) |
| Optical specifications |
Wave front distortion or
surface flatness in terms
of the number of
interference fringes @633 nm |
| Material |
"Lasergrade" low
absorption CVD diamond |
| Thickness |
0.3 - 1.2 mm |
| Coating |
Uncoated or AR/AR |
| Size and
shape |
Up to 50 mm;
rectangular, circular of
elliptical |
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