GT Pt98

which is

where G* and C* are the thermal conductance and capacitance, respectively, of the element. The amplitude of the temperature cycle is

FlG. 9.4. The response of a pyroelectric detector as a function of frequency for several values of the load resistance RL. The responsivity can be improved by increasing RL, but at the expense of frequency response. The device will normally be operated in the plateau region, so that output is less sensitive to frequency fluctuations. (After Boyd 1983).

FlG. 9.4. The response of a pyroelectric detector as a function of frequency for several values of the load resistance RL. The responsivity can be improved by increasing RL, but at the expense of frequency response. The device will normally be operated in the plateau region, so that output is less sensitive to frequency fluctuations. (After Boyd 1983).

dt uPn

which gives rise to an output current

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