Constant Power Mode; Figure 16 - Constant Current - Low Bandwidth Mode - Newport 6000 Operation And Maintenance Manual

Chapter 3
Modulation Input
Current Set Point
3.2.11

Constant Power Mode

In constant P mode the laser circuit is configured as shown in Figure 17. Photodiode
feedback is used to control the laser output and the bandwidth is held low.
Principles of Operation

Figure 16 - Constant Current - Low Bandwidth Mode

Unregulated DC
Voltage
Regulator
Pass
Transistor
Output
Shorting
Laser Diode
Current
Sense
27