Coherent DIAMOND Series User Manual

DIAMOND™ C-20 and C-30 Liquid-Cooled Laser Operator’s Manual
iv
Signal Interface .......................................................................................................... 3-5
Thermal Shutdown Switch......................................................................................... 3-5
DC Power Relay ........................................................................................................ 3-6
Condensation of Water Vapor .................................................................................... 3-6
Coolant Fittings on Laser System.............................................................................. 3-7
Cooling Capacity ....................................................................................................... 3-7
Coolant Filtering ........................................................................................................ 3-7
Coolant Flow Rate and Pressure................................................................................ 3-8
Pressure Drop............................................................................................................. 3-8
Electrical Power Connection .............................................................................................. 3-9
DC Power Supply Requirements ............................................................................. 3-10
DC Power Supply Cabling Requirements ...................................................... 3-10
Control Signal Connection................................................................................................ 3-11
Beam Propagation............................................................................................................. 3-12
Section Four: Laser Operation.............................................................................. 4-1
Signal Interface Connectors................................................................................................ 4-1
Operating Modes.................................................................................................................4-2
Typical Waveform...................................................................................................... 4-2
CW Mode................................................................................................................... 4-3
Power Stability........................................................................................................... 4-3
Pre-Ionization............................................................................................................. 4-4
Gated CW Mode ........................................................................................................ 4-4
Variable Output Power Capability; Pulsewidth Variation.......................................... 4-4
Optical Pulse Shape .......................................................................................... 4-4
Complex Modulation Waveforms.............................................................................. 4-4
Varying the Pulsewidth ..................................................................................... 4-4
Protection from Unacceptable Inputs ............................................................... 4-5
Turning the Laser On and Checking Output Power............................................................ 4-5
Electronic Control............................................................................................................... 4-6
Electronic Signals Required to Turn the Laser On .................................................... 4-7
Start-up Sequence ............................................................................................. 4-7
Response Times of Laser to RF Enable and Control Enable..................................... 4-7
Signals Used for Fault Detection ............................................................................... 4-8
VSWR Faults During Initial Turn-on ........................................................................ 4-9
C-20 and C-30 Microcontroller, I/O Signal Operation ............................................ 4-10
Temperature Fault ........................................................................................... 4-12
Voltage Fault ................................................................................................... 4-13
Section Five: Maintenance and Troubleshooting ....................................... 5-1
Maintenance........................................................................................................................ 5-1
Cooling System Maintenance .................................................................................... 5-1
Cleanliness of Output Optical Element ..................................................................... 5-2
Troubleshooting .................................................................................................................. 5-2
DC Power and Voltage............................................................................................... 5-2
Control Inputs ............................................................................................................ 5-2
Over-Temperature Warning ....................................................................................... 5-2
Over-Temperature Shutdown..................................................................................... 5-3

Coherent DIAMOND Series Specifications

General

Brand	Coherent
Model	DIAMOND Series
Category	Measuring Instruments
Language	English