Vescent D2-135, Quick Setup Instructions

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2021/09/01 05:04 1/5 Quick Setup Instructions (Offset Phase Lock D2-135)
Product Manuals - https://www.vescent.com/manuals/
Quick Setup Instructions (Offset Phase Lock
D2-135)
Please see the full D2-135 manual for more detail on the performance, specifications, and features of
this product.
Please refer to the Quick Setup Instructions for setting up the electronics modules and connecting the
Laser Controller to the Lasers.
At this point you should have two lasers temperature stabilized and running at their operating current.
The two lasers should be within a few GHz of the same frequency of each other. (If unsure of the laser
frequency, you can use a spectroscopy module to get one laser on transition and then temporarily
move the spectroscopy module to the other laser to get it near the same transition.)
D2-250 or D2-150 Alignment
This section assumes you are using the D2-150 Heterodyne Module to obtain an optical beat note
between two lasers. If you have obtained an optical beat note by other methods, please skip this
section. The new
D2-250 Heterodyne Module has replaced the D2-150. Alignment of the D2-250 is
similar to that of the D2-150.
Fig. 1:
Schematic drawing of the laser alignment into the
D2-150 Heterodyne Module.
Place the two lasers and the D2-150 or
D2-250 as shown in either
figure 1 or
figure 2 depending on which unit you are
using: the two lasers oriented 90° relative to
each other and both pointing at the