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GSI Group - Laser Division
JK300HP/JK300P/JK125P
Issue 2.0
Pre-installation and User Manual
Part No: 1EA300E01
Page
5 of 172
Name Definition
Laser Controlled
Area
A work area controlled and supervised to protect personnel from Laser
hazards.
Laser Safety Officer
Person knowledgeable in the evaluation and control of Laser hazards and
has responsibility for overseeing control of Laser hazards.
LASER
Acronym: Light Amplification by the Stimulated Emission of Radiation.
Laser Resonator
An optical assembly that provides feedback for light emerging from the
Laser rod (thus enabling oscillation) and allows extraction of light to
provide the output beam.
The resonator may include additional components to tailor the
characteristics of the Laser beam - for example, beam divergence,
polarisation or monochromaticity.
Light Spectrum
Invisible light of longer wavelength than red light (700nm).
Invisible light of shorter wavelength than violet light (400nm).
Visible light in the wavelength range of 400 to 700nm.
Local Control
Laser is operated and monitored via the control console (PC or GUI).
LSD
Least Significant Digit.
Machine Interface
Facility that allows an external controlling device such as a PLC to control
and monitor the Laser.
MSD
Most Significant Digit.
Nd: YAG
Nd Neodymium:
Doping to provide 1064nm wavelength of the beam.
YAG
Yttrium Aluminium Garnet.
The host crystal contained in the Laser Head.
Parameter Update
Strobe
The signal that is used to send information into the Laser.
Parameter Change
Acknowledge
The signal that is used to acknowledge receipt of information by the Laser.
Remote Control
Laser is operated and monitored via the Machine Interface.
Simmer
Simmer current (or simmer arc) is a current, which is arranged to flow in
the Arc-lamp after the lamp has been triggered (i.e. the impedance of the
gas inside the lamp has been broken down).
Simmering a lamp allows a quicker, more efficient response to current
pulses and avoids the need to trigger the lamp before every Laser pulse.
Sinking
A term used to describe interface signals where current flows into the
Signal Driver in the True state. No current flows in the False state.
Sourcing
A term used to describe interface signals where current flows out of the
Signal Driver in the True state. No current flows in the False state.
Petitioners Canadian Solar Inc. and Canadian Solar (USA) Inc.
Ex. 1025, p. 5