We report the development and progress of terahertz quantum cascade lasers (QCLs) that use the resonant-phonon depopulation scheme to obtain population inversion and where a low-loss, high-modal-confinement metal-metal waveguide is used. These waveguides were fabricated using an indium-gold reactive wafer bonding technique followed by substrate removal, and have been used to obtain lasing up to 137 K in pulsed mode and 93 K in continuous wave (cw) mode. Also, lasing has been obtained at frequencies as low as 2.1 THz (/spl lambda/=141 /spl mu/m), which is the longest wavelength achieved in a QCL without the use of a magnetic field. Recently, an alternative copper-copper thermocompression wafer bonding technique was used to extend cw operation up to a temperature of 97 K.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Resonant-phonon terahertz quantum-cascade lasers using metal-metal waveguides


    Beteiligte:
    Williams, B.S. (Autor:in) / Sushil Kumar, (Autor:in) / Callebaut, H. (Autor:in) / Kohen, S. (Autor:in) / Qing Hu, (Autor:in) / Reno, J.L. (Autor:in)


    Erscheinungsdatum :

    01.01.2004


    Format / Umfang :

    175973 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Hot electrons in resonant-phonon terahertz quantum cascade lasers

    Vitiello, M.S. / Scamarcio, G. / Spagnolo, V. et al. | IEEE | 2005


    Resonant-phonon terahertz quantum cascade lasers at long wavelengths

    Williams, B.S. / Kumar, S. / Qing Hu, et al. | IEEE | 2004


    Hot Electrons in Resonant-Phonon Terahertz Quantum Cascade Lasers

    Vitiello, M. | British Library Conference Proceedings | 2005


    Terahertz quantum cascade lasers

    Qing Hu, / Williams, B.S. / Kumar, S. et al. | IEEE | 2003