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ST522 - A TES Bolometer for THz FT-Spectroscopy

A TES Bolometer for THz FT-Spectroscopy

M. Kehrt, J. Beyer, C. Monte, J. Hollandt

Physikalisch-Technische Bundesanstalt
Abbestraße 2-12, Berlin, Germany


E-mail: [email protected]

Abstract — We recently reported on a Transition Edge Sensor (TES) composite bolometer for Fourier Transform spectroscopy which was designed, built and characterized. The design is based on a superconducting thermistor with SQUID readout, SiN membrane technology and a thin film metal mesh absorber which is optimized for the spectral range from 0.1 THz to 3 THz. A noise equivalent power (NEP) of 3.8×10-13 W/Hz0.5 was achieved with a linear dynamic range of at least four orders of magnitude.

Keywords (Index Terms) — Bolometer, absorber, TES, teraherz, spectrometer, Fourier transform.

IEEE/CSC & ESAS SUPERCONDUCTIVITY NEWS FORUM (global edition), July 2016. 
Received June 25, 2016; Accepted July 12, 2016. Reference No. ST522; Category 4.