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Zeeman Effect Experiment
Mount the Polarizing Filter and Collimating
13
012-14266B
Mount the Polarizing Filter and Collimating Lens
1. Assemble the polarizing filter and collimating lens on the precision kine-
matic optical mount that has the one-dimensional (horizontal) adjustable
holder. Put the collimating lens on the side of the optical mount that has the
X - Y Adjustment Screws
2. Tighten the set screw that holds the collimating lens, but leave the polarizer
set screw loose so that the polarizer can be rotated.
3. Complete the assembly by fastening a post to the bottom of the horizontal
adjustable holder, and then inserting the post into one of the adjustable post
holders. Screw the adjustable post holder into one of the optical carriers.
4. Attach the optical carrier of the polarizer/lens assembly to the track so that
the collimating lens faces the electromagnet (see Figure 8).
Align the Polarizer/Lens Assembly
5. The optical axis of the polarizer/lens should be aligned with the middle of
the mercury lamp when it is mounted in the electromagnet. To align the
assembly, first loosen the two thumbscrews on the adjustable post holder.
6. Hold a book vertically against the base of the optical carrier. Rotate the
assembly so that both of the black X - Y adjustment screws on the collimat-
ing lens side of the assembly both touch the book. (see Figure 9).
7. Once the assembly is aligned, tighten the upper thumbscrew on the adjustable post holder.
8. Using the silver adjuster ring on the adjustable post holder, adjust the height of the polarizer/lens assembly until its center,
indicated by the white horizontal mark on the polarizer side of the assembly, is at the height measured for the center of the
axial iron core plug. Tighten the lower thumbscrew on the adjustable post holder.
Set Screws
X - Y
Adjustment
Screws
Polarizing
Filter
Kinematic
Optical Mount
Horizontal Adjustable Holder
Adjustable
Post Holder
Adjuster
Ring
Post
Optical
Carrier
Collimating
Lens
Figure 8:Polarizer/Lens Setup
Figure 9: Align the Assembly