We present new classes of E-O modulators and frequency converters based on L-valley intersubband transitions in GaSb-based QW systems. Effective-mass anisotropy and the tilt of the growth direction with respect to the principal axes of the ellipsoidal constant-energy surfaces of L valleys enable these novel devices to operate at normal incidence. An additional advantage of the GaSb-based QW system is that the large conduction-band offset of the GaSb/AlSb system (up to 1 eV) allows operation over a wide infrared range covering longwave (8-12 /spl mu/m), midwave (3-5 /spl mu/m), and even shorter wavelengths.


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    Titel :

    Intersubband electro-optics and frequency conversion at normal incidence


    Beteiligte:
    Xie, H. (Autor:in) / Wang, W.I. (Autor:in) / Meyer, J.R. (Autor:in) / Hoffman, C.A. (Autor:in)

    Erschienen in:

    Proceedings of LEOS'94 ; 1 ; 23-24 vol.1


    Erscheinungsdatum :

    01.01.1994


    Format / Umfang :

    123118 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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