Superconducting microbolometers for time-resolved terahertz spectroscopy

Daniel F. Santavicca; Anthony J. Annunziata; Matthew O. Reese; Luigi Frunzio; Daniel E. Prober

doi:10.1117/12.739327

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26 September 2007 Superconducting microbolometers for time-resolved terahertz spectroscopy

Daniel F. Santavicca, Anthony J. Annunziata, Matthew O. Reese, Luigi Frunzio, Daniel E. Prober

Author Affiliations +

Proceedings Volume 6772, Terahertz Physics, Devices, and Systems II; 67720Q (2007) https://doi.org/10.1117/12.739327
Event: Optics East, 2007, Boston, MA, United States

Abstract

We report the characterization of superconducting niobium microbolometers designed for time-resolved terahertz spectroscopy on nanosecond to millisecond timescales. Coupling of the incident signal is achieved via a planar antenna mounted on a hyperhemispherical silicon lens. We have integrated these detectors into a custom Fourier-transform spectrometer. The spectrometer optics are frequency independent over the spectral range 0.1-3 terahertz and thus the system bandwidth is set by the detector antenna. We have fabricated devices with two different antenna geometries, the double-dipole and the log spiral, and have characterized the spectral response of each. This detector will enable a variety of novel spectroscopy applications.

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Daniel F. Santavicca, Anthony J. Annunziata, Matthew O. Reese, Luigi Frunzio, and Daniel E. Prober "Superconducting microbolometers for time-resolved terahertz spectroscopy", Proc. SPIE 6772, Terahertz Physics, Devices, and Systems II, 67720Q (26 September 2007); https://doi.org/10.1117/12.739327

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