Lecture 10: Bolometers - Leiden Observatory

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Detection of Light: Lecture 11 Electrothermal feedback For ALL semiconductors, we know that the higher the temperature, the lower the resistivity (more charge carriers generated) : ⌧T = C G ⌧E
Detection of Light: Lecture 10 Electrical Responsivity Let dR, dT and dV be the changes in resistance, temperature and voltage across the bolometer, caused by the absorbed power dP. So, we get: dV = IdR= I[ (T )RdT]= (T )V dT= with Rieke p.244: SE = dV dP = dT = (T )V G (T )PI (T )V dP G (T )PI dP G (T )PI The responsivity is completely determined by the electrical properties of the detector (so this is also called electrical responsivity)
Page 1 and 2: Detection of Light: Lecture 10 Dete
Page 3 and 4: Three Basic Types of Detectors •
Page 5 and 6: A milestone in the history of bolom
Page 7 and 8: Detection of Light: Lecture 10 Stat
Page 9 and 10: Basic Operation of a Bolometer T0 W
Page 11 and 12: Steady State Operation of a Bolomet
Page 13 and 14: Bolometer Thermal Time constant The
Page 15 and 16: Temperature Coefficient of Resistan
Page 17 and 18: R vs T for intrinsic semiconductor
Page 19: Detection of Light: Lecture 10 Appr
Page 23 and 24: etermining responsivity at V0 The r
Page 25 and 26: Detector responsivity from electric
Page 27 and 28: Two sources of Bolometer Heating T0
Page 29 and 30: Detection of Light: Lecture 10 Nois

Lecture 10: Bolometers - Leiden Observatory

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