THORLABS OTKB Manual page 5

Optical Trap Kit
Remove caps to
connect Fiber
To KCB1 on Beam
expander Segment
Figure 5.1: The Collimator Segment
3.2 The Beam Expander Segment:
This includes the beam expansion achromatic doublets and the cube assembly (with the dichroic) for
reflecting the trap laser and transmitting the visible spectrum for camera viewing. It also includes the
imaging lens for the camera. The Collimator segment, the Camera segment and the Vertical segment all
connect to this at its three ports as shown in Figure 5.2. Remember to screw the CPB1 to the table as
indicated in picture. After connecting the Collimator segment, check the collimation and alignment of
the expanded beam as described in Section 6.2, steps 14) to 16). Align the dichroic as described in same
section, steps 21) to 22).
The Vertical
Segment Port
Imaging Lens
Screw to table
The Collimator
The Camera
Segment Port
Segment Port
Figure 5.2: The Beam Expander Segment
19590-D04-V15; Apr 12, 2012 Page 5 www.thorlabs.com