2-22
Step 4
The Z axis—the fiber focus ring—may need to be slightly adjusted for maximum
power. The focus is correct when small changes in X and Y translation produce
large changes in intensity. The fiber is out of the lens focal region when large X
and Y translation produces little change in light intensity. After adjusting the Z
axis, it is usually necessary to re-adjust the X and Y translation.
Step 5
Adjust the X axis for maximum light intensity, then adjust the Y axis. Go back
and re-check the X axis, then re-check Y. Go back to Step 4 if the Z axis needs
further optimization.
F
INE
A
DJUSTMENT
Use the X-Y fine adjustment closest to the laser to optimize the coupling.
C
OUPLING
THE
L
ASER
L
IGHT
INTO
THE
P
ROBE
WARNING
NEVER look directly into the fiber tip or laser aperture! Severe eye
damage or blindness could result.
Coupling the laser light into the probe is a procedure that is performed frequently. It can
be repeated any time it seems the intensity at the tip could be improved.
The tip fiber should be stripped and temporarily installed in the cam splicer, as described
on page 2-14.
CAUTION
Do not follow this procedure when the tip is in feedback.
Step 1
Use the fiber stripper tool to strip away about 25mm of the polymer buffer off the
end of the laser fiber. Note that once stripped, the fiber is very brittle.
Step 2
Use the optical fiber cleaver from the tool kit to cleave the end of the laser fiber
(you may also want to refer to the documentation supplied with the fiber cleaver):
(a)
Open the jaws of the cleaver, and seat the fiber into the notch in the lower jaw.
(b)
Insert the fiber until the stripped portion on the end aligns with the 16 mm mark.
(c)
Press the scoring bar down on the fiber. Take care not to break the fiber.
(d)
Gently flex the tongue of the cleaver down until the fiber cleaves. Take care not
to touch the tip.
Step 3
Carefully insert the laser fiber into the cam splicer at the opposite end from the tip
fiber. To help the laser fiber enter, gently roll or twist it as it is inserted . Insert
the laser fiber far enough to touch the tip fiber. Pushing on one fiber should move
the other fiber.
Step 4
Put the splicer arms in the locked (down) position.
Step 5
Gently seat the laser fiber into the fiber holder on the end of the cam splicer
assembly.
Step 6
Check to see that laser light is coupled into the tip fibertip fiber. The laser light
may not be visible at the tip, but if the room lights are turned off, the tip fiber
should be glowing. If there is no light visible in the tip fiber, repeat Steps 2-5.
Summary of Contents for Aurora-2
Page 30: ...2 18 Figure 2 20 Reflection Tower Controls Swivel Tilt Focus Rotating mirror selector ...
Page 44: ...3 8 ...
Page 52: ...5 4 ...
Page 54: ......
