Faculté des sciences

23 GHz operation of a room temperature photovoltaic quantum cascade detector at 5.35 µm

Hofstetter, Daniel ; Graf, Marcel ; Aellen, Thierry ; Faist, Jérôme ; Hvozdara, Lubos ; Blaser, Stéphane

In: Applied Physic Letters, 2006, vol. 89, no. 061119, p. 1-3

We present a room temperature operated 5.35 µm quantum cascade detector which was tested at high frequencies using an optical heterodyne experiment. Two slightly detuned continuous wave distributed feedback single mode quantum cascade lasers were used to generate a beating signal. The maximum frequency at which the resulting microwave signal could be detected was 23 GHz. The cutoff... Plus

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    Summary
    We present a room temperature operated 5.35 µm quantum cascade detector which was tested at high frequencies using an optical heterodyne experiment. Two slightly detuned continuous wave distributed feedback single mode quantum cascade lasers were used to generate a beating signal. The maximum frequency at which the resulting microwave signal could be detected was 23 GHz. The cutoff behavior of our device was modeled with a simple RLC circuit and showed excellent agreement with the experimental data.