DazScope
manual
Chapter 2 : Installation
in the note ”trig mode settings”, while more technical details can be found in the note ”Trigger”
(both files can be found on the CD-ROM).
2.2.3
Getting Ready to Operate the DazScope
Connecting the Unit and Starting the Program
1. Connect the USB cable to the host computer
2. Connect the RF output to the crystal unit.
3. Turn on the power switch on the rear panel of the RF generator. The waveform memory is
zeroed at power on: no RF output.
4. Double click on the Dazzler icon on the desktop. The program is automatically started.
5. Connect the trigger signal (less than the acoustic travel time before laser pulse - see
) to the Trigger Laser input on the front panel.
6. Check that the second diode on front panel lits.
7. Use the menu ”Setup
>
trig and mode” to set the proper trigger delay (starts the panel).
Alignment and Calibration of the Dazzler
Please refer to appendix
Power and Duration Parameters (blue area)
1. Set the
power level
to 0
.
5.
2. Uncheck the
CG
box (no constant gain).
3. Select the
new
option in the
action
listbox.
4. Select
Load In...A
with the button switch.
5. Set the
add waveform
button to off
Amplitude parameters (red area)
1. Select the
dials
item in the listbox located just below the red
Amplitude
label.
2. Set the central wavelength (
position
) to a value appropriate to the laser source : ideally,
this value should be equal to the central wavelength of the input pulses. When the Dazzler
is placed before the laser amplifier(s), this value may significantly differ from the central
wavelength of the amplified pulses, especially when strong spectral gain narrowing or red-
shift effects are present in the amplification stage
3
It is not unusual to set ”position = 800” and to measure amplified pulses at 810-815nm.
FASTLITE-9 september 2008
