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​My activity focuses on the experimental and theoretical study of semiconductor lasers. I am interested in an special type of semiconductor laser, the vertical-cavity surface-emitting laser (VCSEL). This laser is an example of microlaser (with micrometric dimensions). Nowadays VCSELs are used as emitters in local area networks, in optical interconnections, optical mice, sensors... I am interested in a better understanding of the characteristics of the light emitted by those devices, not only  in their solitary operation, but also when they are subject to light emitted by another laser (optical injection) or by the same VCSEL (optical feedback). At the present time most of my efforts are devoted to the Optical Communications Lab of the Instituto de Física de Cantabria. We study how the fast changes of the polarization or the transverse modes emitted by the VCSEL when it is subject to optical injection can be utilized to get several functionalities of all-optical signal processing: optical memories, inversion and regeneration of the signal. High-speed all-optical signal processing is of great interest for future applications in computing or in optical communication systems. 

  • Instituto de Física de Cantabria
    Edificio Juan Jordá
    Avenida de los Castros, s/n
    E-39005 Santander
    Cantabria, España

  • El Instituto de Física de Cantabria es un Centro Mixto del Consejo Superior de Investigaciones Científicas y de la Universidad de Cantabria.