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Portable Optical Tweezers Kit Chapter 6: Setup and Adjustment
Page 56 MTN012639-D02
Step 3: Laser Installation

Place the alignment plate into the cage system
right before the 45° mirror, see image to the right.

Insert the laser into the mount without securing it
with the locking screws yet.

Turn the laser on and observe the pattern on the
alignment target. You will see an elliptical shape.

Rotate the collimator in the housing until the long
side of the ellipse is oriented in vertical direction.

Fix the locking screws. Make sure the locking
screws fix the collimator close to the thread, see
image below.
Step 4: Laser Mount Alignment

Turn the tip and tilt screws on the KC1-T mount
until the brightest spot of the laser light
distribution hits the hole in the alignment plate.

Turn off the laser.

Remove the alignment plate.
Step 5: Adjustment Mirror Alignment, Part 1

The second (upper) adjustment mirror
must also be removed from its mount.
To do this unscrew the set screw,
place a piece of adhesive tape on the
back of the mirror and pull it out of the
mount.

Turn on the laser.

Adjust the lower adjustment mirror so
the laser beam exits the upper KCB1
vertically . For that, using a piece of
paper to view the laser spot helps.
When aligned vertically, the laser beam will exit
close to one side of the mount
aperture . That is not problematic: when the mirror is installed, the laser will hit the
mirror approximately in the center.

Turn off the laser.

Place the mirror back into the mount and fix the locking screw.