As part of a study for a second generation heterodyne spectrometer on SOFIA we are developing a 2.5-THz frontend which is implemented in a pulse-tube cooler. It consists of a quantum-cascade laser as local oscillator and a phonon-cooled NbN hot electron bolometric mixer. Frequency stabilization to below 300 kHz full width at half maximum is achieved by locking to a molecular absorption line. We will present the design and performance of the frontend and discuss the prospects for an application on board of SOFIA.

Frontend for a 2.5-THz heterodyne spectrometer without liquid cryogen

TREDICUCCI, ALESSANDRO;
2011

Abstract

As part of a study for a second generation heterodyne spectrometer on SOFIA we are developing a 2.5-THz frontend which is implemented in a pulse-tube cooler. It consists of a quantum-cascade laser as local oscillator and a phonon-cooled NbN hot electron bolometric mixer. Frequency stabilization to below 300 kHz full width at half maximum is achieved by locking to a molecular absorption line. We will present the design and performance of the frontend and discuss the prospects for an application on board of SOFIA.
2011
2011 36th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2011)
Houston, TX
2-7 Oct. 2011
2011 36th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2011)
IEEE
9781457705090
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11384/84464
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