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 Fri Nov 14 19:20:42 2008, Yoichi, Update, PSL, Reference cavity ring down 
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 Fri Nov 14 20:35:47 2008, rana, Update, PSL, Reference cavity ring down
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Fri Nov 14 22:40:51 2008, Yoichi, Update, PSL, Reference cavity ring down
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Mon Nov 17 15:07:06 2008, Yoichi, Update, PSL, Reference cavity ring down
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Message ID: 1137
Entry time: Fri Nov 14 20:35:47 2008
In reply to: 1136
Reply to this: 1138
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| Author: |
rana |
| Type: |
Update |
| Category: |
PSL |
| Subject: |
Reference cavity ring down |
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To make the DEI pulser make a fast pulse on the EO shutter EOMs, we had to make sure:
1) the cable had a high voltage rated dielectric. cheap dielectrics show the 'corona'
effect, especially when there is a bend in the cable.
2) the EO has to have a resistor on it to prevent ringing due to the impedance mismatch.
3) We needed ~3.5 kV to get the EO shutter crystal to flip the light by 90 deg. |