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Waveplate Replacement
© 2019 Cutting Edge Optronics
Figure 2-31: Steering Mirror Layout
13. Turn laser on, just above threshold.
14. Adjust steering mirror to align beam back to the reference target from step 2.
1. Using a heat gun, loosen the epoxy holding the rotation mount to the post.
Unscrew the rotation mount. Care should be taken to clean any debris from
the inside of the laser housing that may be generated from breaking the epoxy
bonds.
NOTE:
On new lasers and assemblies, only the 1/4-20 set-screw is bridge tacked to
the post holder.
2. Place the rotation mount on a flat surface and use a spanner wrench to remove
the retainer ring. Care should be taken to clean any debris that may be
generated from breaking any epoxy bonds.
3. Remove the waveplate optic.
4. Inspect the new waveplate optic and clean if necessary.
5. Install the new waveplate optic. Replace the retainer ring and tighten using the
spanner wrench.
6. Repeat step 4.
7. Reinsert the post into the post holder until it bottoms out. Set the laser to
operate at threshold. Verify the perpendicularity of the assembly to the beam
path by aligning the retro reflection from the waveplate back to the output
aperture. Bridge tack a 1/4-20 3/8 long set screw to post holder.
8. The waveplate must now be rotated to achieve vertical polarization.
Chapter 3: Tuning and Testing Procedures
37
Patara II and Iklwa II Service Manual
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