Spectra-Physics Tsunami - Figure 9-1: Drop and Drag Method; Figure 9-2: Lens Tissue Folded for Cleaning

Tsunami Mode-Locked Ti:sapphire Laser
9-4
Figure 9-1: Drop and Drag Method.
Figure 9-2: Lens Tissue Folded for Cleaning
3. For stubborn contaminants and to access hard-to-reach places, use a
tissue in a hemostat to clean the optic.
a. Fold a piece of tissue in half repeatedly until you have a pad about
1 cm square, and clamp it in a plastic hemostat (Figure 9-2).
b. If required, cut the paper with a solvent-cleaned tool to allow
access to the optic.
c. Saturate the tissue with acetone or methanol, shake off the excess,
resaturate, and shake again.
d. Wipe the surface in a single motion.
Be careful that the hemostat does not touch the optic surface or the
coating may be scratched.
4. Inspect the cleaned optic under ample light to verify the optic actually
got cleaner, i.e., you did not replace one contaminant with another.
While folding, do not touch the surface of the tissue that will contact the
optic, or you will contaminate the solvent.
Caution!