Vescent D2-135, Quick Setup Instructions

2021/09/01 05:04

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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