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2.1.4 Polarizer Assembly Modifications
The seed laser beam is usually injected into the host resonator through the polarizer assembly
next to the Q-switch. In most cases this will require the polarizer to be modified. A procedure for
modifying a typical polarizer assembly and a sketch of a typical assembly are given below.
Rocker
Heat Absorbing
Glass
Polarizer
Glass
Window
Adjustment
Screw
Figure 2-3: Polarizer Assembly Modifications
1. Remove the dust tube between the polarizer and the host laser pump chamber.
2. Remove the entire polarizer assembly housing.
3. Disassemble the polarizer assembly housing.
4. Remove the heat absorbing glass by pulling it out of its slot or knocking it loose. The glass may
break, but this is okay.
5. Install the window assembly in the housing.
6. Reassemble the polarizer assembly.
7. Reinstall the polarizer assembly in its mount, taking care to return the polarizer to its original
orientation.
8. Verify that these changes did not affect the host laser’s performance by operating the host laser
at its set power and measuring the power output.
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