CHAPTER 3. INSTALLATION AND OPERATION
Lambda beam user manual
Note for lasers at
473 nm
,
532 nm
and
561 nm
:
it is recommended to initially oper-
ate the laser at full maximum output power for
5 min
. Afterwards the output power can
be adjusted to any value. At low output powers these lasers often exhibit multi-mode
emission.
3.4
Operation modes
You can select the operation mode using Ltune or your own custom software. In stand-
alone operation, the laser system is always in Combined Modulation Mode. The technical
specifications for the modulation inputs can be found in
Constant Power Mode
The Lambda beam laser systems can be driven in
mode without an external control
voltage. In this case, the laser emission is constant at the value which is defined by the
Ltune Software.
Analog Modulation Mode
In this mode the optical output power can be controlled by an external voltage at the
analog modulation input connector. The output power is modulated proportional to this
signal.
Digital Modulation Mode
Here, the digital modulation input is used to switch the laser off and on between
0
%
and
100
%
maximum power. The nominal
input levels for the low-speed modulation
input are
0 V
(laser off ) and
5 V
(laser on)
3.5
Disconnecting the system
Always disconnect the power supply before removing the controller from the laser head
in order to prevent damage to the laser!
To disconnect the laser system, please proceed in this order:
1. Turn the key switch to the OFF position.
2. Disconnect the power supply and the modulation input connector (if used) from
the controller.
1
However, all signals below
0
.
8 V
are considered as off and above
2 V
as on.
8
