Tsunami - Beckman Institute Laser Resource Center

Alignment
opposite this hole.
PI Pump
Steering Mirror
P2 Pump
Focusing Mirror
Figure 6-6: Pump Mirrors PI and P2
Vertically and horizontally adjust the tilt of P2 to direct the pump
beam through M3 and the rod, and center the emerging beam on M2
(Figure 6-5 and Figure 6-6).
Centering the beam on the intracavity surfaces of M2 and M3 is critical
for proper mode overlap in the rod. If the beam is centered on M2 but
not on M3, walk the pump beam on P2, adjusting both PA and P2, until
proper alignment is achieved.
13. Align cavity focus mirror M2.
Adjust M2 vertically and horizontally to direct the small amount of
pump light reflected from M2 though the center of MI.
14. Adjust the focus of M2 and MS.
Use an ir viewer and white card for the following steps.
a. Place the white card in front of M4.
b. Increase the pump laser to nominal power.
c. Adjust M3 vertically and horizontally to center the image on M4.