Laser Sources How to Use Laser Source Modules
110 Agilent 8163A/B, 8164A/B, and 8166A/B User’s Guide, Fourth Edition
For Agilent 8165x Series Dual-Wavelength Laser Source modules, you
can choose independent modulation sources and independent
modulation frequencies for both wavelengths.
NOTE If you choose independent modulation sources for a Dual-Wavelength
Laser Source module, the text Mod will be displayed in the Laser
Source channel.
If you choose the same modulation sources for both wavelengths of a
Dual-Wavelength Laser Source module, the relevant text will be
displayed in the Laser Source channel, for example, Int if both
wavelengths use internal modulation.
To modulate the lower wavelength source at 100 kHz using internal
modulation and the upper wavelength source using coherence control
for a Dual-Wavelength Laser Source module:
1 Move to the laser source channel and press the [Details] softkey.
2 Move to [λ] parameter and press Enter.
3 Select the lower wavelength source, for example, <1309.6>, using the
cursor key, and press Enter.
4 Move to the [Mod Frq] parameter for the lower wavelength source
and press Enter.
5 Enter 100.000 and press Enter.
6 Move to the [Mod Src] parameter for the lower wavelength source
and press Enter.
7 Move to <Internal>, by using the cursor key, and press Enter. The
text Mod appears in the Laser Source channel.
8 Move to the [Mod Src] parameter for the upper wavelength source
and press Enter.
9 Move to <Coherence Ctrl.>, by using the cursor key, and press Enter.
The text Mod is still displayed in the Laser Source channel.
10 Enable the laser output, by pressing the Active hardkey on the
module’s front panel.
How to Use Triggers
Some Laser Source modules allow you to output trigger signals to
external measurement instruments.
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