INTUN Tunable Laser
12372-D02, 12/15/2007
Page 34
www.thorlabs.com
•
Wait 2 s
•
Set the OPTICAL_POWER to –1 V
•
Wait approximately 100 ms
•
Set the OPTICAL_POWER to 1 V
Repeat the following four-step procedure five times:
1.
Set the WAVELENGTH_TUNING to –9.5 V
2.
Wait 1 s
3.
Set the WAVELENGTH_TUNING to 9.5 V
4.
Wait 1 s
•
Set the WAVELENGTH_TUNING to 0 V
The laser start-up procedure is finished.
Calibration
For every optical power level repeat the steps below. The method is illustrated in the figure below.
•
Perform the start-up procedure before starting calibration.
•
Set the OPTICAL_POWER to the desired value. Measure the actual optical power using a power
meter.
•
Increase the WAVELENGTH_TUNING monotonically between the calibration points. Measure
the actual wavelength using a wavemeter.
•
Perform the start-up procedure (see section 0).
•
Set the OPTICAL_POWER to the desired value.
•
Decrease the WAVELENGTH_TUNING monotonically between the calibration points.
1
2
3
4
5
6
8
7
10
9
Start-up point
Optical Power
Wavelength Tuning
Calibration points
Figure 21: Illustration of the calibration sequence
