Method D: External Pulse Trigger: One Pin Operation, Constant Frequency; Method E: External Pulse Trigger: One Pin Operation, Variable Frequency - Spectra-Physics Pulseo User Manual

Method D: External Pulse Trigger: One Pin Operation, Constant Frequency

Method E: External Pulse Trigger: One Pin Operation, Variable Frequency

Trigger In BNC
Method D
Optical Output
Trigger In BNC
Method E
Optical Output
Trigger In BNC
Method F
Enable In BNC
Optical Output
Trigger In BNC
Optical Output
Method G
Trigger In BNC
Optical Output
Method H
Optical Output
*The first external trigger pulse in a burst arms the laser but does not generate optical output.
Figure 7-2: Common External Triggering Operating Methods
This method allows the user to generate optical pulses upon demand. An
example might be trepanning a via. Note that the first rising edge is used to
"arm" the laser, and that the first optical pulse is generated synchronously
with the second rising edge in the pulse train. Also note that the laser will
generate a single trailing pulse of E
pulse train (note: this may be GATEd out using Method F).
This method allows the user to generate optical pulses upon demand. If the
inter-pulse period exceeds 1/E
ited pulse at 1/E , and the first rising edge after this large pulse will be
freq
used to "arm" the laser (i.e., the first trigger pulse will be "deleted"). The
pulse-period determines the pulse energy.
*
*
*
1/E
freq
T
1/E
freq
Trigger In
(BNC)
Tdelay
-equivalent energy at the end of the
freq
, the laser will generate one energy-lim-
freq
Operation
1/E
freq
T
min
*
*
Large First
Pulse (+20%)
T-t T T T T
*
Balanced First
Pulse
Trep min
Tdelay Tdelay
7-7