Frequency response of Thermal Detectors
Starting from the differential equation: ηl = H (dθ/dt) + Gθ, show that if I = Iₒ + Iω exp jωt, choose a similar functional form for the temperature θ = θₒ + θω exp jωt and derive/verify that |θω| = ηIω(G² + ω²H²)-½ and the phase difference φ between θω and Iω is: φ = arctan (ωH/G)