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Vescent D2-135, Quick Setup Instructions

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Vescent D2-135 Quick Setup Instructions Download Page 5

2021/09/01 05:04

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Quick Setup Instructions (Offset Phase Lock D2-135)

Product Manuals - https://www.vescent.com/manuals/

the center of the beat note, as shown
in 

figure 5

.

Help

For further assistance, contact us at:
+1 (303) 296-6766 or

[email protected]

Please see the full 

D2-135 manual

 for more detail on the performance, specifications, and features of

this product.

From:

https://www.vescent.com/manuals/

 - Product Manuals

Permanent link:

https://www.vescent.com/manuals/doku.php?id=d2:quick_start_opls

Last update: 2021/08/26 14:26

Summary of Contents for D2-135

Page 1: ... 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 ski...

Page 2: ...see how well that light gets back to the laser Adjust the same beam splitter so the light is aimed directly at the laser source This should get the alignment close enough to measure the power in the fiber to use for further optimization Aim for 500 μW of power although a few hundred microwatts should be sufficient The detector in the D2 160 or D2 135 FC can be damaged by more than 1 mW input power so...

Page 3: ...gnment of the 3 beam splitters until the beat note looks good Repeat until you have the desired frequency offset typically up to 10 GHz D2 135 Locking Getting a phase lock can be tricky as the servo feedback must be pretty well optimized to your laser to get a phase lock The narrower the linewidth of the laser and the higher the bandwidth of the laser the easier it is to get a phase lock The first s...

Page 4: ...ency to a specific value You may be significantly broadening the laser because the servo is oscillating but you have a basic lock Optimizing the Lock Fig 5 Beat note when locked with coherent peak showing a phase lock The first step is to optimize the gain Look at the Error In Monitor and turn down the gain to minimize the RMS noise on the Error In Monitor At this point you should be able to see the ...

Page 5: ...n figure 5 Help For further assistance contact us at 1 303 296 6766 or info vescent com Please see the full D2 135 manual for more detail on the performance specifications and features of this product From https www vescent com manuals Product Manuals Permanent link https www vescent com manuals doku php id d2 quick_start_opls Last update 2021 08 26 14 26 ...

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