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| 40m Log |
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 Thu Feb 5 21:42:28 2009, Yoichi, Update, PSL, My thoughts on ISS 
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 Fri Feb 6 09:52:35 2009, Kakeru, Update, PSL, Current shunt transfar function
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Fri Feb 6 23:23:48 2009, Kakeru, Yoichi, Update, PSL, ISS is fixed
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Mon Feb 9 16:02:42 2009, Yoichi, Update, PSL, PSL relative intensity noise
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Tue Feb 10 23:36:25 2009, Kakeru, Update, PSL, PA current and laser output
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Wed Feb 11 07:28:25 2009, Yoichi, Update, PSL, PA current and laser output
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Wed Feb 11 23:51:53 2009, Kakeru, Update, PSL, PA current and laser output
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Message ID: 1284
Entry time: Mon Feb 9 16:02:42 2009
In reply to: 1283
Reply to this: 1289
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| Author: |
Yoichi |
| Type: |
Update |
| Category: |
PSL |
| Subject: |
PSL relative intensity noise |
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I attached the relative intensity noise of the PSL.
There is no bump around the lower UGF (~1Hz), but at the higher UGF (~30kHz) there is a clear bump.
When the ISS gain slider was moved up to 21dB, the peak got milder, because there is larger phase margin at higher frequencies with the current filter design.
We may want to optimize the filter later. |
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