Datasheet

B. Operations for advanced users
In this section, tips for advanced users are provided for specific application. It is not
recommended to perform those procedures in normal operation conditions.
IMPORTANT:
The operation instructions contained in this section must be performed by expert
users only, as permanent damage to the laser may occur if not manipulated correctly.
B.1. Direct QCL voltage
These connections give direct access to the voltage of the laser.
IMPORTANT:
Direct voltage measurement of the QCL must be performed by experts only and
agreed upon with ALPES LASERS.
The "L" connection is connected AC coupled to the cathode of the laser through a
divider by ten. The end of cable must be 50Ω terminated for accurate measurement.
The "B" is connected the same to the anode of the laser (Base Receptacle).
By using the math trace of an oscilloscope showing the "L" channel minus the "B",
one can get the voltage on the laser. This measurement is more accurate than the
information obtained from the LDD.
Note: the cables are not included in the Starter Kit but can be supplied by ALPES
LASERS.
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