Tsunami Mode-Locked Ti:sapphire Laser
9-6
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 optics described contribute to loss of laser output power.
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 Pro-
cedures for Cleaning Optics.”
4. Install the windows.
Referenced from the outside, the input window should face downward,
and the output window upward.
5. Install and tighten the mounting screws. Do not overtighten.
6. Open the pump laser shutter.
Prisms (fs Configuration)
1. Close the pump laser shutter.
2. Clean the prisms in place. Use a separate folded tissue and a hemostat
to clean the surface of each prism as outlined in Step 3 of “General
Procedure for Cleaning.”
3. Open the pump laser shutter.
Ti:sapphire Rod
Laser performance is extremely sensitive to dirt on the rod surfaces. A
small portion of rod protrudes from the end of the holder to allow easy
access for cleaning. Refer to Figure 6-5.
DO NOT remove or adjust the prisms to clean them: they are aligned at
the factory and are not to be disturbed unless specifically told to do so
elsewhere in this manual. A service call might be required if disturbed.
Clean them in place.
Caution!
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