LUMENIS VersaPulse PowerSuite - Page 36

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For Ho: (for power measurementLamp Volts 800V (For Centering) Lamp Volts 800V
Lamp Energy 50J Lamp energy 50J
Repetition Rate 10 Hz Repetition Rate 1.3 Hz
For Nd: (for power measurement) Lamp Volts 800V (For Centering) Lamp Volts 800V
Lamp current 50A Lamp current 50A
Repetition Rate 60 Hz Repetition Rate 5 Hz
Turn on only one flashlamp when aligning the cavity. After one channel is aligned,
turn off the flashlamp for that particular channel and then turn on the flashlamp for
the next channel to be aligned.
c. Make a single burn on the paper and compare the burn to the drawing below.
d. Adjust the X or Y axis on the OC mirror mount to optimize the alignment of the beam.
e. Install the cross hair aperture (as described in 3.5.1).
f. Make a burn (single channel) through the cross hair aperture onto a piece of burn paper.
g. Examine the burn to determine if the YAG beam is centered.
The burn should be centered over the cross hairs. If not, adjust ("walk" as described in
the following subparagraph) the OC/HR positions to bring the burn into center,
rechecking as necessary as in step "b" above. Continue adjustment until the burn foot-
print is centered in the cross hairs.
"Walking" the beam refers to the method of adjusting the OC and HR in the
same direction and distance, so that the two mirrors remain in the same orien-
tation with each other, but are brought to a new orientation with respect to
the rod. Each mirror mount has a horizontal and a vertical adjustment screw.
For example, to walk the beam "up" with respect to the hole, the OC vertical
adjustment would be turned in, then the HR vertical adjustment would be
T
ypically, the burn diameter is
a
pproximately 4mm in diameter.
I
f the burn is small, perform the cavity
a
lignment and increase the lamp
c
urrent. The burn diameter may
g
et larger.
A
B
An oblong burn spot indicates
that the HR and OC optics are not
properly aligned for maximum
power. Burn "A" shows mis-alignment
in the X-axis, while burn "B" shows
misalignment in both X and Y.
Good cavity power is shown. A large
diameter burn (approx. 4mm) indicates
good power. No adjustment of the HR o
r
OC is necessary.