Terahertz photonic mixers as local oscillators for hot electron bolometer and superconductor-insulator-superconductor astronomical receivers

Cámara Mayorga, I.; Muñoz Pradas, P.; Jacobs, K.; Güsten, R.; Mikulics, M.; Kordos, P.; Michael, E. A.; Schmitz, A.; Lüth, H.; Kaseman, C.; Marso, M.; van der Wal, P.

doi:10.1063/1.2336486

Journal Article

Terahertz photonic mixers as local oscillators for hot electron bolometer and superconductor-insulator-superconductor astronomical receivers

Cámara Mayorga, I. ; Muñoz Pradas, P. ; Michael, E. A. ; Mikulics, M.FZJ* ; Schmitz, A. ; van der Wal, P. ; Kaseman, C. ; Güsten, R. ; Jacobs, K. ; Marso, M.FZJ* ; Lüth, H.FZJ* ; Kordos, P.FZJ*

2006
American Institute of Physics Melville, NY

Journal of applied physics 100, 043116-1 - 043116-4 (2006) [10.1063/1.2336486]

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Please use a persistent id in citations: http://hdl.handle.net/2128/17184 doi:10.1063/1.2336486

Abstract: A pump experiment of two astronomical heterodyne receivers, a superconductor- insulator-superconductor (SIS) receiver at 450 GHz and a hot-electron-bolometer (HEB) receiver at 750 GHz, is reported. A low-temperature-grown GaAs metal-semiconductor-metal photonic local oscillator (LO) was illuminated by two near infrared semiconductor lasers, generating a beat frequency in the submillimeter range. I-V junction characteristics for different LO pump power levels demonstrate that the power delivered by the photomixer is sufficient to pump a SIS and a HEB mixer. SIS receiver noise temperatures were compared using a conventional solid-state LO and a photonic LO. In both cases, the best receiver noise temperature was identical (T-sys=170 K). (c) 2006 American Institute of Physics.

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