GSI Group - Laser Division
JK300HP/JK300P/JK125P
Issue 2.0
Pre-installation and User Manual
Part No: 1EA300E01
Page
15 of 172
1.10 Laser Power Delivery
Laser output power is delivered, via a fibre optic cable, to the Focus Head at the Workstation
for processing. Up to four fibre optic cables can be fitted, permitting power to be directed to
one of four workstations at any one time. This is called Timesharing.
The direction of the beam is controlled using an electro-mechanical Shutter. Each fibre has
a dedicated Shutter that allows the beam to be switched into that fibre.
It is possible to share the laser beam down more than one fibre at the same time, this is
called energy sharing.
The beam delivery options are:
•
Up to a maximum 4-way timeshare.
•
3-way energy share.
•
Combinations of 2-way timeshare and 2-way energy share.
Individual Shutters can be controlled via the Machine Interface by selecting the beam path
(Shutter, Fibre and Focus Head) into which the Laser beam is to be directed. When the
Laser is producing an output but no beam path is selected, the Laser output is ‘dumped’ into
a water-cooled Beam Dump.
Shutters can only be activated when the associated safety circuits are healthy. The majority
of Nd: YAG applications set the Laser to run at a predetermined output power and use the
Shutter to control when and where the Laser processing takes place.
Refer to Figure 3 for details on Shutter timing.
Petitioners Canadian Solar Inc. and Canadian Solar (USA) Inc.
Ex. 1025, p. 15
