Tsunami - Beckman Institute Laser Resource Center

Tsunami
With the exception of pump mirror PI and the GTI (ps configuration), all
mirrors are captured and held in place by a screw-in holder. Unscrew the -
holder and the mirror will come out with it. The optic is retained by a
small O-ring and is removed by simply grabbing the exposed barrel and
pulling it straight out of the holder. In most cases, you do not have to remove
the optic from its holder to clean it.
Each optical element has a v-shaped arrow on its barrel along with its part
number. The arrow points to the coated surface that faces the intracavity
beam. If you need to verify the location of the optic in the laser, refer to
the tables located at the end of chapter 10, "Options and Accessories."
If your laser becomes badly misaligned, refer to chapter 6, "Alignment,"
for alignment procedures.
The cleaning procedures that follow are placed in the order of importance
that the optic(s) described contributes to laser output power loss.
Brewster Windows
Brewster-angle windows are incorporated at the input and output ends of
Tsunami to seal the laser head, to allow it to be purged with nitrogen.
From time-to-time the windows require cleaning.
1. Close the pump laser shutter.
2. Remove the windows.
Remove the screws (2) holding each window in place, and remove the -
windows by pressing them out from inside the cavity. Take care not to
damage the window.
3. Clean each surface.
Use a folded tissue and hemostat according to step 3 of "General Procedures
for Cleaning Optics."
4. Install the windows.
Referenced from the outside, the input window should face upward,
and the output window downward.
5. Install and tighten the mounting screws. Do not overtighten.
6. Open the pump laser shutter.