Frequency response of current-driven polarization modulation in vertical-cavity surface-emitting lasers
Anno: 2002
Autori: Verschaffelt G., Albert J., Veretennicoff I., Danckaert J., Barbay S., Giacomelli G., Marin F.
Affiliazione autori: Department of Applied Physics and Photonics (TW – TONA), Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium;
Istituto Nazionale di Ottica Applicata and INFM, Largo E. Fermi 6, 50125 Firenze, Italy;
Dept. Physics, Univ. Firenze and INFM and LENS, Largo E. Fermi 2, 50125 Firenze, Italy
Abstract: We present an experimental study of the current-driven polarization modulation properties of vertical-cavity surface-emitting Lasers (VCSELs). Some VCSELs exhibit a high-contrast polarization flip for a particular value of pump current. By modulating the current around this value we measure the critical modulation amplitude necessary to force current-driven polarization switching as a function of the modulation frequency. We thus obtain the polarization modulation frequency response, which shows the same cut-off frequency as the thermal frequency response. This indicates the necessity to incorporate a temperature-dependent variable in realistic models that describe the polarization behavior of these VCSELs. (C) 2002 American Institute of Physics.
Giornale/Rivista: APPLIED PHYSICS LETTERS
Volume: 80 (13) Da Pagina: 2248 A: 2250
Parole chiavi: VCSEL; polarization; modulationDOI: 10.1063/1.1465113Citazioni: 24dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-05-12Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui