Newport 5600 Series - Laser Driver Operation

24 Chapter 3 Laser Diode Driver Operation
See section 3.1.2 for additional information on laser diode protection.
3.4.2 Detector Feedback Connections
The detector signal is input at the 9-pin D-connector at pins 3 and 4, or the
detector BNC. The detector must be electrically isolated from the Laser
Diode in your setup.
Many laser diode drivers contain an internal photodiode that monitors the
back-facet emission of the laser. Some packages have one side of the
photodiode is internally connected to either the laser anode or cathode.
These types of packages will not work with the 5600.
3.4.3 Grounding Consideration
The laser outputs of the driver are isolated from chassis ground allowing
either output terminal to be grounded at the user's option.
3.5 Laser Driver Operation
3.5.1 Quick Start
After the power-on sequence is complete, the 5600 goes to the main display.
To set up a laser driver, press the
MENU
button, then select laser setup. At
this point, the display shows all laser parameters. Using the cursor keys and
dial, select the desired functions and set the parameter values. When
finished, return to laser display by pressing the
MENU
button.
Enter the desired set point value using the cursor keys or the dial. Press the
LDD ON
button to operate the laser. The LED illuminates to indicate laser
operation. To turn the laser off, press the
LDD ON
button.
3.5.2 Laser Main Screen
The laser main screen in shown in Figure 9 and described in detail below.
→
→→
→
Io= 50.01 A <LDD>
Im= 0.0 uA
Vf= 0.000 V MOD
I M P O S InT SETUP
←
←←
←
Figure 9 - Main Screen
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