ID Photonics CoBrite Series - Laser Tuning Modes; Coarse Tuning Process

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13
CoBrite
DX1
User’s Manual
3.4 Laser tuning modes
Coarse tuning allows accessing the full specified tuning range while fine tuning (FTF)
allows for offsetting from the coarse tuning set point by a small range. The resulting
set point is the sum of coarse tuning set point and FTF/fine tuning value.
3.4.1 Coarse tuning
This tuning mode allows tuning the laser to any frequency of the available range
specified for the laser port. The tuning process will require the output to be disabled
for a short period of time.
Description of tuning process:
1. Output will be switched off (~1 second)
2. Output is switched on using new frequency
3. Power is increased until final output power is reached.
4. Power is stabilized, tuning process is completed.
Note that the time to tune the laser is the actual time required to tune the laser, the
software based tuning indicator may indicate a tuning state for a longer time period
than the actual tuning requires.
time
Power
time
Frequency Wavelengt
1
2
3
4
f
f
max
f
min
1. Coarse tuning setpoint
2. fine tuning range