Ultra-fast quantum-well infared photodetectors operating at 10{\mu}m with flat response up to 70GHz at room temperature

Autor: Hakl, M., Lin, Q. Y., Lepillet, S., Billet, M., Lampin, J-F., Pirotta, S., Colombelli, R., Wan, W. J., Cao, J. C., Li, H., Peytavit, E., Barbieri, S.

III-V semiconductor mid-infrared photodetectors based on intersubband transitions hold a great potential for ultra-high-speed operation up to several hundreds of GHz. In this work we exploit a ~350nm-thick GaAs/Al0.2Ga0.8As multi-quantum-well heteros

Externí odkaz: http://arxiv.org/abs/2007.00299

Non-uniform carrier density in Cd$_3$As$_2$ evidenced by optical spectroscopy

Autor: Crassee, I., Martino, E., Homes, C. C., Caha, O., Novak, J., Tueckmantel, P., Hakl, M., Nateprov, A., Arushanov, E., Gibson, Q. D., Cava, R. J., Koohpayeh, S. M., Arpino, K. E., McQueen, T. M., Orlita, M., Akrap, Ana

Publikováno v: Phys. Rev. B 97, 125204 (2018)

We report the detailed optical properties of Cd$_3$As$_2$ crystals in a wide parameter space: temperature, magnetic field, carrier concentration and crystal orientation. We investigate high-quality crystals synthesized by three different techniques.

Externí odkaz: http://arxiv.org/abs/1712.03147

Strong interband Faraday rotation in 3D topological insulator Bi2Se3

Autor: Ohnoutek, L., Hakl, M., Veis, M., Piot, B. A., Faugeras, C., Martinez, G., Yakushev, M. V., Martin, R. W., Drasar, C., Materna, A., Strzelecka, G., Hruban, A., Potemski, M., Orlita, M.

Publikováno v: Scientific Reports 6, 19087 (2016)

The Faraday effect is a representative magneto-optical phenomenon, resulting from the transfer of angular momentum between interacting light and matter in which time-reversal symmetry has been broken by an externally applied magnetic field. Here we r

Externí odkaz: http://arxiv.org/abs/1512.00885

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Development of high-speed, patch-antenna intersubband photodetectors at 10.3um

Autor: Lin, Q., Hakl, M, Pirotta, S, Colombelli, R., Wan, W., Li, H, Cao, J., Lampin, J-F, Peytavit, E., Barbieri, S

Publikováno v: 44th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2019
44th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2019, Sep 2019, Paris, France

International audience; We present our work towards the development of high-speed, GaAs-AlGaAs multi-quantum wells photodetectors at 10.3m, based on two-dimensional arrays of patch-antenna resonators. First, the results of FDTD simulations will be

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::2415b16605022e967f8f6d8a1f743391
https://hal.archives-ouvertes.fr/hal-02323396