Tsunami - Beckman Institute Laser Resource Center

Tsunami
4. Attach a BNC cable between the PHOTODIODE IN connector on the
Model 3930 and the LTC PD connector on the Tsunami laser head. -
CAUTION
Whenever this BNC cable is removed, the 50 SJ terminator must be
reconnected to prevent oscillation of the photodiode gain circuit.
5. If you are going to use the 80 MHz internal reference, attach the short
BNC cable from the accessory kit between the 80 MHz OUT and REF
IN connectors on the rear panel of the Model 3930. If, instead, you are
using an external reference to monitor another laser (e.g., the output
of a Model 3932), verify the output is 0 dbm into an 50 SJ termination
(0.63 Vpp max.) for the REF IN input, then attach a BNC cable from
the signal source to REF IN.
6. Verify the voltage and fuse rating of the Model 3930 are correct. They
are a part of the power switch assembly on the rear panel. Refer to
appendix C for instructions on how to change the setting and the fuse.
7. Connect the power cord from the Model 3930 switch assembly
connector to your facility power outlet.
8. Verify the shutter of the pump laser is closed or that the laser is not
on, then open the Tsunami laser head.
For information on how to open the laser head, refer to chapter 5,
"Installation: Installing the Tsunami Laser Head."
9. Remove the standard M4 mirror by unscrewing it from its mount
(Figure 6-8).
10. Install the PZT mirror provided with the LTC system into the M4
mount, then attach its short cable to the mating cable laying in the
tray near it.
11. Open the pump laser shutter and adjust the horizontal and vertical
controls of M4 to get the Tsunami lasing again and to optimize output
power.
12. Optimize laser output again by adjusting Mlo and MI
This completes the standard installation of the Lok-to-Clock system.
Before you proceed with the next section on operating the Lok-to-Clock
system, verify you have complied with the instructions for general operation
in chapter 7.