Chapter 5 Laser Unit
5.4 LU4A Four-laser Module A
1-194
5.4.6 Final Adjustment for Other Laser Light with the Optical Fiber
Other laser lights than the Ar laser have been adjusted by performing up to step 3 "Aligning each laser beam
to the Ar laser beam" in Section 5.4.4, “Laser Rough Adjustment 2." For the most part, other laser light
passes through the optical fiber at the completion of Section 5.4.5, “Final Adjustment for the Ar Laser Light
with the Optical Fiber." Therefore, the adjustments for other laser lights are performed with the beam shift
part and the dichroic mirror adjustment part.
1
Adjustment to reach the maximum laser light transmissions through the optical fiber
In this section, the green HeNe laser and the 561-nm solid-state laser are described as examples.
1. Attach the tip of the optical fiber onto the power
meter tool.
2. Manually open the L4 laser shutter.
Figure 5.4-105
3. Rotate the whole L4 beam shift part by hands and
adjust the angle to get the maximum intensity of the
laser light.
4. Rotate the setscrew for the vertical adjustment on
the L4 beam shift part and adjust to get the
maximum intensity of the laser light.
Figure 5.4-106
5. Rotate the setscrew for the horizontal adjustment on
the L4 dichroic mirror adjustment part and adjust the
angle to reach the maximum intensity of the laser
light.
Rotate by hand
Vertical setscrew
(farther from the axis A)
Axis A
Horizontal setscrew
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