Terahertz quantum cascade lasers have been investigated with respect to their performance as a local oscillator in a heterodyne receiver. The beam profile has been measured and transformed in to a close to Gaussian profile resulting in a good matching between the field patterns of the quantum cascade laser and the antenna of a superconducting hot electron bolometric mixer. Noise temperature measurements with the hot electron bolometer and a 2.5 THz quantum cascade laser yielded the same result as with a gas laser as local oscillator. (C) 2005 Optical Society of America.

Terahertz quantum cascade laser as local oscillator in a heterodyne receiver

TREDICUCCI, ALESSANDRO;
2005

Abstract

Terahertz quantum cascade lasers have been investigated with respect to their performance as a local oscillator in a heterodyne receiver. The beam profile has been measured and transformed in to a close to Gaussian profile resulting in a good matching between the field patterns of the quantum cascade laser and the antenna of a superconducting hot electron bolometric mixer. Noise temperature measurements with the hot electron bolometer and a 2.5 THz quantum cascade laser yielded the same result as with a gas laser as local oscillator. (C) 2005 Optical Society of America.
Hubers, Hw; Pavlov, Sg; Semenov, Ad; Kohler, R; Mahler, L; Tredicucci, Alessandro; Beere, He; Ritchie, Da; Linfield, Eh
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11568/495152
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