Tsunami Mode-Locked Ti:sapphire Laser
5-2
3. Verify the output of the pump laser meets specifications for power and
mode quality. Specifications for the Tsunami pump source are located
at the end of Chapter 3.
4. Reduce pump laser output power to minimum.
5. Close the pump laser shutter.
This completes the installation of the pump laser.
Initial Placement of the Tsunami Laser Head
1. Place the Tsunami laser head on the table parallel to the pump laser as
shown in Figure 5-1, and position it so its input window is roughly in
the same plane as the output window of the pump laser.
2. Remove the Tsunami laser head cover.
a. Pull outward on the bottom of each of the four cover latches until it
snaps.
b. Press downward on the cover to release the pressure on the latches,
then pull the top portion of the latch from the notch in the cover.
c. Use the slotted finger grips at each end of the cover (Figure 4-1)
and remove the cover from the laser.
The shutter will close automatically when the cover is removed.
3. Adjust the Tsunami laser head height.
a. Loosen the locking nut on each foot.
The nuts are threaded onto each leg and jam against the bottom of
the base plate to lock the foot in place and to add stiffness to the
foot.
b. Inside the laser head, use a
5
/32 in. Allen (hex) wrench to adjust the
feet so the vertical center of the input window is 14.5 cm above the
table and the base plate is parallel to the table top.
c. Tighten the locking nuts.
This completes the initial placement of the Tsunami laser.
Aligning the Tsunami Laser Head to the Pump Beam
1. Open the pump laser shutter.
The pump laser is a Class IV High Power Laser. Always wear proper
eye protection and follow the safety precautions in Chapter 2, “Laser
Safety.”
Danger!
Laser Radiation
Verify the pump laser is set to minimum current before proceeding with
the next step. A high-power beam may damage the Ti:sapphire crystal
when the chiller is not hooked up and operating.
Warning!
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