Nikon Eclipse TI-TIRF-E Setup Manual page 164

5
Adjusting to give maximum Ar laser light transmission through the fiber
Fiber side adjustment
screw
Figure 5.3-67
Figure 5.3-68
Figure 5.3-69
Chapter 5 Laser Unit
5.3 C-LU3EX Three-laser Unit EX
1.
Laser incidence side
adjustment screw
(Adjustment example)
1-150
Attach the emitter end of the optical fiber to the
power meter tool and adjust to find the point giving
the maximum brightness, while measuring the
brightness on the power meter. To adjust the
brightness, use either the laser incidence side H
adjustment screw (horizontal) or V adjustment screw
(vertical), together with the fiber side V adjustment
screw and H adjustment screw.
As a guide to Ar laser incidence efficiency, the
brightness at the end of the coupler should be at
least 50% of the brightness in front of the coupler.
(1) Turn the laser incidence side H adjustment
screw 30 to 60 degrees in one direction.
(2) Turn the fiber side H adjustment screw in the
same direction as (1) to find the point giving a
maximum brightness.
If brightness does not increase, turn the laser
incidence side adjustment screw 30 to 60
degrees in the direction opposite to (1). Turn
the fiber side adjustment screw in the same
direction to find the point giving a maximum
brightness.
(3) Repeat the adjustment in step (2) to find the
point in the horizontal axis giving a maximum
brightness.
(4) Turn the laser incidence side V adjustment
screw 30 to 60 degrees. Turn the fiber side V
adjustment screw in the same direction to find
the point giving a maximum brightness.
(5) Repeat the adjustment in step (4) to find the
point in the vertical axis giving a maximum
brightness.
(6) Repeated adjustments along the horizontal and
vertical axes may result in even greater
brightness.