Tsunami - Beckman Institute Laser Resource Center

Tsunami
Input Bezel Connections
The input bezel connections attach to the Model 3910 purge unit, the -
chiller, the optional Model 3930 Lok-to-ClockTM electronics module, and
the standard Model 3955 electronics module. Refer to Figure 4-1 or
Figure 4-3.
Purge bleed valve-when open, allows more purge gas to flow through
the laser head during initial start-up. It is closed for normal operation.
Water inlet connector-input
chiller.
Water outlet connector-+utput
for the laser rod cooling water from the
for the laser rod heated water to the chiller.
Purge inlet connector-inlet for clean, dry gas from the Model 3910.
LTC PD photodiode BNC connector-sends the reference photodiode
signal to the phase detector circuit in the optional Model 3930 Lok-to-
Clock electronics module.
TO 3930 main signal D-sub connector (25-pin female)-sends and
receives signals to and from the optional Model 3930 Lok-to-Clock
electronics module.
TO 3955 main signal D-sub connector (25-pin male)-receives heater,
power, and control signals from the Model 3955 electronics module.
ML PD photodiode BNC connector-sends the reference photodiode sig- -
nal to the acousto-optic modulator (AOM) driver in the Model 3955
electronics module.
ML mode locker BNC connector-receives
electronics module.
the AOM rf signal from the
Control Panel
The laser head control panel indicates whether or not pulses are detected,
and the temperature status of the mode locker. For ps systems, it also
provides GTI temperature status and dispersion control for the GTI
(Figure 4-2).
PULSING indicator-when green, it indicates either pulses are present or
conditions are correct for pulses; when flashing red, it indicates no pulses
are present but the system is functioning.
MODE LOCKER TEMPERATURE indicator-when green, it indicates
mode locker temperature has stabilized; red indicates the opposite. From a
"cold" laser start-up, expect a stabilization time of about 20 minutes.