Tsunami - Beckman Institute Laser Resource Center

Tsunami
i. Route the GTI heater cable along the side of the resonator, from
the GTI to the laser head pc board, then plug it into connector J2.
j. Turn on the Model 3955 electronics module. It will take about 20
minutes for the GTI heater to warm up, but you can continue with
this procedure.
7. Place a white card in front of M5.
8. Adjust MI vertically and horizontally to overlap the two fluorescent
images from MI and M3 displayed on the card, and create a crossshaped
image.
9. Replace M2.
a. Unscrew the M2 holder, replace the optic in the holder with the
appropriate one for the chosen wavelength, and screw the holder
back in.
b. Adjust M2 vertically and horizontally until the fluorescent images
are again overlapped on M5.
c. Verify the cross image is visible on the card outside the output
window.
10. Replace MS.
Adjust Pp vertically and horizontally until the fluorescent images are
once again overlapped on M5. Slight adjustments to M3 might be
required to direct the fluorescence from M1 and M3 back to the card
outside the output window.
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11. For ps systems, replace M4 and M5; for fs systems, replace M4
through M9.
Change optics in sequence, one at a time, adjusting each to obtain the
cross image on the white card outside the output window before moving
on to the next optic.
12. Replace MlO.
a. Reach in from both sides of the Mlo mount and unscrew the
knurled mirror holder (Figure 6-12).
b. Replace the optic in the holder with the appropriate one and
screw the holder back in.
13. Align Mlo.
a. Place a white card with a 5 rnrn diameter hole in it between M4
and M5 SO the hole is centered on the reflected fluorescent image
from M4.
b. Direct the reflected image from Mlo back through the hole in the
card and overlap it with the image from M4. When you remove
the card, lasing should begin. 1
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