Lecture 10: Bolometers - Leiden Observatory
Lecture 10: Bolometers - Leiden Observatory
Lecture 10: Bolometers - Leiden Observatory
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Detector responsivity from electrical responsivity<br />
Detection of Light: <strong>Lecture</strong> <strong>10</strong><br />
Mather (1982) has a derivation that includes a correction<br />
factor of (RL + R)/(RL + Z)<br />
So that:<br />
E = T<br />
✓ Z + R<br />
2R<br />
◆✓ RL + R<br />
RL + Z<br />
This equation can be used to determine the heat capacity C = T G<br />
of the bolometer in terms of (which can be measured from S(f) )<br />
⌧E<br />
So, SE is electrical responsivity, but now we can derive the responsivity to<br />
incoming radiation (where only a fraction ⌘ of the incoming energy is<br />
absorbed) :<br />
◆<br />
SR = SE = 2I<br />
✓<br />
Z<br />
R 1<br />
◆
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