Communication Dans Un Congrès Année : 2002

An ultra-wide bandwidth photomixer with down conversion at terahertz frequency

Résumé

We report on the development of an-ultra-broad band photoconductive detector, based on low-temperature-grown GaAs, vertically-integrated with terahertz spiral antennas. Velocity overshoot was expected in the photo-response facing the dramatic decrease in conversion efficiency due to a very short carrier lifetime. Photomixing experiments with two optical 0.8 /spl mu/m laser beating shows a 3-dB bandwidth of 700 GHz with radiation power at terahertz frequency of 0.1 /spl mu/W under moderate optical pumping and bias voltages. Preliminary results are also reported at long wavelengths taking advantage of the sub-gap absorption tail for non-annealed samples.

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Dates et versions

hal-02347966 , version 1 (05-11-2019)

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Citer

Emilien Peytavit, S. Arscott, D. Lippens, Gaël Mouret, Pascal Masselin, et al.. An ultra-wide bandwidth photomixer with down conversion at terahertz frequency. THz 2002. 2002 IEEE Tenth International Conference on Terahertz Electronics, Sep 2002, Cambridge, United Kingdom. pp.23-26, ⟨10.1109/THZ.2002.1037578⟩. ⟨hal-02347966⟩
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