Multiple junction biasing of superconducting tunnel junction detectors
نویسندگان
چکیده
منابع مشابه
Multiple junction biasing of superconducting tunnel junction detectors
We describe a biasing scheme for single-photon detectors based on superconducting tunnel junctions. It replaces a single detector junction with a circuit of three junctions and achieves biasing of a detector junction at subgap currents without the use of an external magnetic field. The biasing occurs through the nonlinear interaction of the three junctions, which we demonstrate through numerica...
متن کاملNoise mechanisms in superconducting tunnel-junction detectors
We present a theory and measurements of noise mechanisms in superconducting tunnel-junction detectors used as single-photon spectrometers. These mechanisms result from incomplete cooling of the excited quasiparticles in the tunnel-junction electrode. Due to the incomplete cooling, only a fraction of the initially created charge is collected by tunneling. Additional effects include reduced dynam...
متن کاملSuperconducting tunnel junction bolometers
2014 Two new types of superconducting infrared bolometer are described. In one, the temperature dependent Josephson current in an SNS junction is measured with a SQUID galvanometer. In the other, the temperature-dependent quasiparticle tunneling current in an SIN junction is measured with a conventional fet amplifier. Either type of junction is deposited on a low heat capacity sapphire substrat...
متن کاملSuperconducting Tunnel Junction Detectors for Extreme Ultraviolet Applications
We present measurements of superconducting tunnel junction (STJ) spectrometers optimized for extreme ultraviolet energies (EUV), between 20–200 eV. The high count rates demands of astronomical applications, such as solar flare studies, uniquely suit STJs as compared to other cryogenic spectrometers. We have simulated EUV measurements with the technique of multiphoton absorption using a pulsed U...
متن کاملHeat Pulse Studies of Quasiparticle Dynamics in Superconducting Tunnel Junction Photon Detectors
Non-equilibrium phonons provide a valuable method for studying the interactions of carriers in low temperature photon and particle detectors, and hence of characterising their performance. Superconducting tunnel junctions (STJs) are widely used as sensitive photon detectors throughout the electromagnetic spectrum [1]. We describe investigations of the response of STJ detectors in which the effe...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Applied Physics Letters
سال: 2005
ISSN: 0003-6951,1077-3118
DOI: 10.1063/1.1890467