M. Fardmanesh, Analytic thermal modeling for dc-to-midrange modulation frequency responses of thin-film high-T-c superconductive edge-transition bolometers, APPL OPTICS, 40(7), 2001, pp. 1080-1088
Thin-film superconductive edge-transition bolometers are modeled with a one
-dimensional analytic thermal model with joule heating, film and substrate
materials, and the physical interface effects taken into consideration. The
results from the model agree well with the experimental results of samples
made of large-meander-line Yba(2)Cu(3)O(7--x) films on crystalline SrTiO3,
LaAlO3, and MgO substrates up to 100 kHz, the limits of the experimental s
etup. Compared with the results of the SrTiO3 substrate samples, the result
s from the model of the LaAlO3 and the MgO substrate samples deviate slight
ly from the measured values at very low modulation frequencies (below simil
ar to 10 Hz). The deviation increases for higher thermal-conductive substra
te materials. When the model was used, the substrate absorption and the the
rmal parameters of the devices could also be investigated. (C) 2001 Optical
Society of America OCIS codes: 230.0040, 040.3060.