Abstract
The complex impedance measurement technique is an established method for the characterisation of Transition-Edge Sensors (TES) bolometers and microcalorimeters. In this report this technique is applied at frequencies up to 250kHz to Ti/Pd and Ti/Au Transition-Edge Sensors, in the optical and near-infrared wavelength range, to obtain a complete frequency response in the complex plane. From these measurements we obtain information about the logarithmic temperature sensitivity α, the logarithmic current sensitivity β and on the device thermal parameters, heat capacity C, thermal conductance G and the effective response time τ eff. All these parameters provide a reasonable understanding of the two different detectors and a discussion about the main differences is also reported.
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Taralli, E., Portesi, C., Lolli, L. et al. Impedance measurements for photon number resolving Transition-Edge Sensors. Eur. Phys. J. Plus 127, 13 (2012). https://doi.org/10.1140/epjp/i2012-12013-3
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DOI: https://doi.org/10.1140/epjp/i2012-12013-3