Schilling Marking Systems GmbH
In Grubenäcker 1 DE-78532 Tuttlingen
+49 (0)7461 9472-0
+49 (0)7461 9472-20
www.schilling-marking.de
MegaLight
Installation
Technical modifications reserved
19
Edition 2004
Aiming laser diode
The aiming diode laser with 635nm wavelength (visible in red) is supplied at low voltage (2.5-
4Vdc) and is located in the Resonator unit. This visible radiation overlaps with the power laser
beam and makes it possible to indirectly view the optical path, as well as the operating field at
the output of the scanner head.
Display
Display provides the Operator with information on the status of the laser and is the first
diagnostic tool in the event of a fault
Laser resonator
The laser Resonator is basically composed of a pair of lenses able to gather the radiation
pumped at 808nm output from the optical fibre and focalized inside the crystal of active
material (Nd:YAG) by a pair of aligned mirrors which act as an oscillator for the laser radiation
at 1064nm and a Cr4+:YAG, which acts as a passive Q-switch and is used to generate
instantaneous high power laser impulses suitable for engraving. The final stage carried out a
beam-expander function: it increases the diameter of the output laser beam and improves the
collimation in order to be able to improve the focalization of the beam in a spot of reduced
dimensions, to obtain elevated irradiation on the engraving plane.
Picture 6: Laser Resonator
CRYSTAL Nd:YAG
CRYSTAL Cr4+:YAG
BEAM EXPANDER
FOCUSING OPTICS
MIRROR HR@1064nm
EXIT COUPLING
λ
=808 nm CW
RED DIODE PILOT
BEAM
DICHROIC MIRROR
λ
=1064 nm
PULSED
+
λ
=635 nm/CW
