THz optical beatnote detection with a fast hot electron bolometer operating up to 31 GHz

Sara Cibella; Andres Forrer; Mattias Beck; Pasquale Carelli; Fabio Chiarello; Jérôme Faist; Alessandro Gaggero; Ennio Giovine; Francesco Martini; Urban Senica; Roberto Leoni; Giacomo Scalari

doi:10.1117/12.2649970

13 March 2023 THz optical beatnote detection with a fast hot electron bolometer operating up to 31 GHz

Sara Cibella, Andres Forrer, Mattias Beck, Pasquale Carelli, Fabio Chiarello, Jérôme Faist, Alessandro Gaggero, Ennio Giovine, Francesco Martini, Urban Senica, Roberto Leoni, Giacomo Scalari

Author Affiliations +

Proceedings Volume PC12420, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XVI; PC124200D (2023) https://doi.org/10.1117/12.2649970
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

We studied the performance of hot-electron bolometers (HEBs) operating at THz optical frequencies based on superconducting niobium nitride films. We report on large optical bandwidth measurement of the voltage response of the detector carried out with different THz sources. We show that the impulse response of the fully packaged HEB at 7.5 K has a 3 dB cut-off around 2 GHz, but a considerable detection capability is also observed above 30 GHz recorded in mixing mode operation by using a THz frequency comb quantum cascade laser

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Sara Cibella, Andres Forrer, Mattias Beck, Pasquale Carelli, Fabio Chiarello, Jérôme Faist, Alessandro Gaggero, Ennio Giovine, Francesco Martini, Urban Senica, Roberto Leoni, and Giacomo Scalari "THz optical beatnote detection with a fast hot electron bolometer operating up to 31 GHz", Proc. SPIE PC12420, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XVI, PC124200D (13 March 2023); https://doi.org/10.1117/12.2649970

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