Universität zu Köln

Journal Article

Justen, Matthias, Bonzon, Christopher, Ohtani, Keita, Beck, Mathias, Graf, Urs and Faist, Jerome ORCID: 0000-0003-4429-7988 (2016). 2D patch antenna array on a double metal quantum cascade laser with >90% coupling to a Gaussian beam and selectable facet transparency at 1.9 THz. Opt. Lett., 41 (19). S. 4590 - 4593. WASHINGTON: OPTICAL SOC AMER. ISSN 1539-4794

Justen, Matthias, Otani, Keita, Turcinkova, Dana, Castellano, Fabrizio, Beck, Mattias ORCID: 0000-0002-0260-5797, Graf, Urs U., Buechel, Denis, Schultz, Michael and Faist, Jerome ORCID: 0000-0003-4429-7988 (2017). Waveguide Embedding of a Double-Metal 1.9-THz Quantum Cascade Laser: Design, Manufacturing, and Results. IEEE Trans. Terahertz Sci. Technol., 7 (5). S. 609 - 614. PISCATAWAY: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. ISSN 2156-342X

Ohtani, Keita, Turcinkova, Dana, Bonzon, Christopher, Benea-Chelmus, Ileana-Cristina, Beck, Mattias ORCID: 0000-0002-0260-5797, Faist, Jerome ORCID: 0000-0003-4429-7988, Justen, Matthias, Graf, Urs U., Mertens, Marc and Stutzki, Juergen (2016). High performance 4.7 THz GaAs quantum cascade lasers based on four quantum wells. New J. Phys., 18. BRISTOL: IOP PUBLISHING LTD. ISSN 1367-2630

Westig, Marc Peter ORCID: 0000-0002-2227-3240, Justen, Matthias, Jacobs, Karl, Stutzki, Juergen, Schultz, Michael, Schomacker, Florian and Honingh, Netty (2012). A 490GHz planar circuit balanced Nb-Al2O3-Nb quasiparticle mixer for radio astronomy: Application to quantitative local oscillator noise determination. J. Appl. Phys., 112 (9). MELVILLE: AMER INST PHYSICS. ISSN 0021-8979

Thesis

Justen, Matthias (2007). Broadband IF Circuits for Superconductor Isolator Superconductor (SIS) Mixers for the Heterodyne Instrument for the Far Infrared on the Herschel Space Observatory and for Sideband Separating Mixers. PhD thesis, Universität zu Köln.