Search Results - "Faist, J."

Thermoelectrically cooled THz quantum cascade laser operating up to 210 K by Bosco, L., Franckié, M., Scalari, G., Beck, M., Wacker, A., Faist, J.

“…We present a terahertz quantum cascade laser operating on a thermoelectric cooler up to a record-high temperature of 210.5 K. The active region design is based…”
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Coherent frequency combs produced by self frequency modulation in quantum cascade lasers by Khurgin, J. B., Dikmelik, Y., Hugi, A., Faist, J.

“…One salient characteristic of Quantum Cascade Laser (QCL) is its very short τ ∼ 1 ps gain recovery time that so far thwarted the attempts to achieve self-mode…”
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Lasing in direct-bandgap GeSn alloy grown on Si by Wirths, S., Geiger, R., von den Driesch, N., Mussler, G., Stoica, T., Mantl, S., Ikonic, Z., Luysberg, M., Chiussi, S., Hartmann, J. M., Sigg, H., Faist, J., Buca, D., Grützmacher, D.

“…Lasing is experimentally demonstrated in a direct bandgap GeSn alloy, grown directly onto Si(001). The authors observe a clear lasing threshold as well as…”
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Ultrastrong Coupling of the Cyclotron Transition of a 2D Electron Gas to a THz Metamaterial by Scalari, G., Maissen, C., Turčinková, D., Hagenmüller, D., De Liberato, S., Ciuti, C., Reichl, C., Schuh, D., Wegscheider, W., Beck, M., Faist, J.

“…Artificial cavity photon resonators with ultrastrong light-matter interactions are attracting interest both in semiconductor and superconducting systems…”
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Analysis of enhanced light emission from highly strained germanium microbridges by Süess, M. J., Geiger, R., Minamisawa, R. A., Schiefler, G., Frigerio, J., Chrastina, D., Isella, G., Spolenak, R., Faist, J., Sigg, H.

“…Tensile strain is a widely discussed means for inducing a direct bandgap in Ge for the realization of a semiconductor laser compatible with Si…”
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Lasing in strained germanium microbridges by Armand Pilon, F. T., Lyasota, A., Niquet, Y.-M., Reboud, V., Calvo, V., Pauc, N., Widiez, J., Bonzon, C., Hartmann, J. M., Chelnokov, A., Faist, J., Sigg, H.

“…Germanium has long been regarded as a promising laser material for silicon based opto-electronics. It is CMOS-compatible and has a favourable band structure,…”
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Fast Fourier transform spectroscopy with broadband strongly modulated quantum cascade lasers by Cargioli, A., Piciocchi, D., Bertrand, M., Faist, J., Scalari, G.

“…The combination of speed and resolution is a fundamental figure of merit for Fourier transform spectroscopy. Here, we show that, by combining a fast rotational…”
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Dual comb operation of λ ∼ 8.2 μm quantum cascade laser frequency comb with 1 W optical power by Jouy, P., Wolf, J. M., Bidaux, Y., Allmendinger, P., Mangold, M., Beck, M., Faist, J.

“…In this work, we report the characterization of a quantum cascade laser frequency comb with an optical power of 1.05 W at λ∼8.2 μm. A 4.5 mm long device has a…”
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Room temperature surface emission on large-area photonic crystal quantum cascade lasers by Liang, Y., Wang, Z., Wolf, J., Gini, E., Beck, M., Meng, B., Faist, J., Scalari, G.

“…We design and fabricate large-area (1.1 mm × 1.1 mm) photonic crystal quantum cascade lasers, enabling single-mode (wavelength ∼ 8.5 µm) surface emission at…”
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Measurement of sub-Poissonian shot noise in a quantum cascade detector by Heckelmann, I., Bertrand, M., Forrer, A., Shahmohammadi, M., Beck, M., Faist, J.

“…In a Quantum Cascade Detector, photocurrent is generated by the absorption of infrared and terahertz radiation in the quantum-well-based modules arranged in…”
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Top-down fabricated silicon nanowires under tensile elastic strain up to 4.5 by Minamisawa, R.A., Süess, M.J., Spolenak, R., Faist, J., David, C., Gobrecht, J., Bourdelle, K.K., Sigg, H.

“…Strained Si nanowires are among the most promising transistor structures for implementation in very large-scale integration due to of their superior…”
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Gain dynamics in a heterogeneous terahertz quantum cascade laser by Derntl, C. G., Scalari, G., Bachmann, D., Beck, M., Faist, J., Unterrainer, K., Darmo, J.

“…The gain recovery time of a heterogeneous active region terahertz quantum cascade laser is studied by terahertz-pump-terahertz-probe spectroscopy. The…”
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Two-well quantum cascade laser optimization by non-equilibrium Green's function modelling by Franckié, M., Bosco, L., Beck, M., Bonzon, C., Mavrona, E., Scalari, G., Wacker, A., Faist, J.

“…We present a two-quantum well THz intersubband laser operating up to 192 K. The structure has been optimized using non-equilibrium Green's function model. The…”
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A patch-array antenna single-mode low electrical dissipation continuous wave terahertz quantum cascade laser by Bosco, L., Bonzon, C., Ohtani, K., Justen, M., Beck, M., Faist, J.

“…We introduce a double metal terahertz quantum cascade laser meant for astrophysical heterodyne measurements. The laser ridge is embedded in benzocyclobutene,…”
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1.9% bi-axial tensile strain in thick germanium suspended membranes fabricated in optical germanium-on-insulator substrates for laser applications by Gassenq, A., Guilloy, K., Osvaldo Dias, G., Pauc, N., Rouchon, D., Hartmann, J.-M., Widiez, J., Tardif, S., Rieutord, F., Escalante, J., Duchemin, I., Niquet, Y.-M., Geiger, R., Zabel, T., Sigg, H., Faist, J., Chelnokov, A., Reboud, V., Calvo, V.

“…High tensile strains in Ge are currently studied for the development of integrated laser sources on Si. In this work, we developed specific…”
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On-chip dual-comb based on quantum cascade laser frequency combs by Villares, G., Wolf, J., Kazakov, D., Süess, M. J., Hugi, A., Beck, M., Faist, J.

“…Dual-comb spectroscopy is emerging as an appealing application of mid-infrared frequency combs for high-resolution molecular spectroscopy, as it leverages on…”
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Polarization-entangled photons produced with high-symmetry site-controlled quantum dots by Mohan, A, Felici, M, Gallo, P, Dwir, B, Rudra, A, Faist, J, Kapon, E

“…Efficient sources of entangled photons ‘on demand’ are crucial for the development of quantum information technology 1 . Such sources cannot rely on parametric…”
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THz and sub-THz quantum cascade lasers by Scalari, G., Walther, C., Fischer, M., Terazzi, R., Beere, H., Ritchie, D., Faist, J.

“…In this paper we review recent progress in obtaining laser action from semiconductor quantum cascade structures covering the low THz region of the…”
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Dual-wavelength quantum cascade laser for trace gas spectroscopy by Jágerská, J., Jouy, P., Hugi, A., Tuzson, B., Looser, H., Mangold, M., Beck, M., Emmenegger, L., Faist, J.

“…We demonstrate a sequentially operating dual-wavelength quantum cascade laser with electrically separated laser sections, emitting single-mode at 5.25 and 6.25…”
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High quality factor, fully switchable terahertz superconducting metasurface by Scalari, G., Maissen, C., Cibella, S., Leoni, R., Faist, J.

“…We present a complementary THz metasurface realised with Niobium thin film which displays a quality factor Q = 54 and a fully switchable behaviour as a…”
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