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Thu Jul 9 17:12:52 2020, gautam, Update, BHD, In-air BHD 
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Tue Jul 14 15:29:25 2020, gautam, Update, BHD, In-air BHD - DCPD amplifier noise
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Wed Jul 15 19:11:40 2020, gautam, Update, BHD, In-air BHD - alignment into OMC
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Thu Jul 16 01:12:22 2020, gautam, Update, BHD, In-air BHD - preparing the LO path   
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Sun Jul 19 15:40:15 2020, gautam, Update, BHD, In-air BHD - CDS and wiring summary
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Wed Jul 29 11:57:59 2020, rana, Update, BHD, In-air BHD - CDS and wiring summary
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Mon Jul 20 17:55:15 2020, gautam, Update, BHD, In-air BHD - preparing the LO path
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Tue Jul 21 00:30:24 2020, gautam, Update, BHD, In-air BHD - LO RIN
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Message ID: 15479
Entry time: Tue Jul 14 15:29:25 2020
In reply to: 15464
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Author: |
gautam |
Type: |
Update |
Category: |
BHD |
Subject: |
In-air BHD - DCPD amplifier noise |
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For the first pass, it's probably easiest to use the existing DCPD amplifier. Looking at the gain and noise performance in Attachment #1, seems totally fine, the electronics noise will not be limiting if we have ~10mW of LO power. I assumed a transimpedance resistor of 1 kohm, and all other numbers as on the schematic (though who knows if the schematic is accurate). The noise should be measured to confirm that the box is performing as expected... |
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