Chapter 4 Using the Agilent 5530 for the First Time
Task 3: Aligning the Optics
Getting Started Guide 4-11
4
4 Adjust the interferometer assembly’s position so that its return beam is
centered on the laser head’s target in the lower port.
5 Adjust the retroreflector’s position so that its return beam is centered on
the laser head’s target.
You should now see just one dot on the laser head’s target. If not, remove
the interferometer assembly and adjust the retroreflector to the laser
beam. Then, replace the interferometer assembly and adjust its position to
the laser beam.
6 Rotate the large aperture into position over the laser head’s upper port.
7 Open the laser head’s lower port.
If the Strength field on the Set Up Laser: LINEAR screen does not display
at least 60 percent, follow these steps:
a. Remove the interferometer assembly. Using only the retroreflector,
the beam strength should be near 100 percent. If the beam strength is
not 100 percent:
Verify the laser head turret is in the "Other" position — see
Figure 4-7.
Check the retroreflector lens for oily films, fingerprints, or physical
damage.
If necessary, clean the optics using the instructions in Chapter 9,
“Troubleshooting and Maintenance.”
If beam strength still is not 100 percent, realign the retroreflector.
b. Check the interferometer assembly lenses for oily films, fingerprints,
or physical damage. If necessary, clean the optics using the
instructions in Chapter 9, “Troubleshooting and Maintenance.”
Realign the optics by repeating steps 1 through 5.
8 Move the retroreflector approximately 25 mm (1 inch) away from the
interferometer assembly.
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