Tsunami - Beckman Institute Laser Resource Center

Alignment
i. Adjust M5 to direct the fluorescent spots through the AOM,
through MIo, and onto the card. The spots should be centered in
the background scatter that is shaped by the AOM and Mlo.
An ir viewer may be required in order to view the small, crossshaped
image on the white card (Figure 6-7) centered in the
background scatter. If the image is absent, it may be blocked by
one or both of these components. Place another white card between
the AOM and MI0 and, using it as a knife edge (slowly
moving it into the fluorescent spots), detect the position of the
beam relative to the two components and properly center it.
j. Remove the white card.
CA UTlON
DO NOTremove or adjust mirrors M6, M7, M8, or M9, or the prisms in a
femtosecond Tsunami laser (Figure 6-10). These optics are prealigned
at the factory and are not to be disturbed unless specifically told to do so
elsewhere in this manual. A service call may be required if disturbed.
16. Align Mlo.
a. Place a power meter in the Tsunami output beam path as a beam
block.
Figure 6-10: Four PrismLFour Mirror Section of Laser Cavity