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Laser Filters Technology
Absorbing filters are made of materials studied in
order to block light of a defined wavelength range of
the spectrum; they absorb laser radiation dangerous
for the eye and transform it to heat, when laser beam
hits the filter. Both plastic and glass can be used for the
production of absorbing filters.
Interferential filters base themselves on the physical
phenomenon of interference, reflecting different
wavelength laser emissions; depending on the
wavelength of the light, radiation is partly reflected
on each single layer composing the filter. This hightech
glass filter is made of several layers which reflect
backwards the optical radiation.
Ultra Fast Laser
The term ultrafast laser is used for mode-locked lasers
emitting ultrashort pulses, i.e. pulses with durations of
fs or ps.
International studies proved that, while highly absorbing
filters made from ion-doped mineral glass have very
good resistance against ultrafast lasers, polycarbonate
filters can vary their absorption under the influence of a
laser irradiation.
Our laser filters are certified according M-mode as
described in EN207:2009 for laser pulses shorter than
10-9 s; in this norm is required a laser damage test during
which the filter shall not lose its protective effect and not
show any induced transmission.
Tables and protection levels
| D | - | continuous wave laser View table |
| I | - | pulsed laser (pulse length: 10-4 to 10-1 s) View table |
| R | - | Q-switched pulsed laser (short pulses; pulse length: 10-9 to 10-7 s) View table |
| M | - | mode-locked pulsed laser (ultra short pulses; pulse length: <10-9 s) View table |
Click model to see detailed information:
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