Temperature dependence of electroabsorption dynamics in an InAs quantum dot saturable absorber at 1.3μm

D. B. Malins, A. Gomez-Iglesias, M. A. Cataluna, E. U. Rafailov, W. Sibbett, A. Miller

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    3 Citations (Scopus)

    Abstract

    This paper investigated absorption recovery in a 5-layer, p-i-n InAs quantum dot modulator that was 1.1 mm long and having a 6 µm ridge waveguide. The change in transmission of a weak probe optical pulse, induced by an intense pump pulse, has been measured as a function of time delay. The 250 fs pump and probe pulses are degenerate in wavelength with the transition at 1.3 µm of the QD ground state and so the temporal absorption dynamics could be mapped out. This measurement was performed with an increasing device temperature in order to assist in the removal of photogenerated carriers. For a test two-section QD mode-locked laser having a pulse repetition rate of 21 GHz, we have also observed that the pulse durations decreased significantly as the temperature was increased up to 70°C. At constant current and reverse bias values, the pulse durations were obtained over the temperature range of the pump-probe measurements. These data support the view that a reduction of the absorber recovery time plays the most important role in the shortening mechanism for the mode-locked pulses produced by this laser. Furthermore, these results also demonstrate the potential for higher repetition rate mode-locked QD lasers that can be resilient to temperature effects.
    Original languageEnglish
    Title of host publication2007 European Conference on Lasers & Electro-Optics and the International Quantum Electronics Conference
    Subtitle of host publicationProceedings
    PublisherIEEE
    Number of pages1
    ISBN (Electronic)9781424409310
    ISBN (Print)9781424409303
    DOIs
    Publication statusPublished - 2007
    Event2007 European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference - International Congress Centre , Munich, Germany
    Duration: 17 Jun 200722 Jun 2007
    http://2007.cleoeurope.org/

    Conference

    Conference2007 European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference
    Abbreviated titleCLEO/Europe -- IQEC 2007
    CountryGermany
    CityMunich
    Period17/06/0722/06/07
    Internet address

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  • Research Output

    • 3 Citations
    • 1 Poster

    Temperature dependence of electroabsorption dynamics in an InAs quantum dot saturable absorber at 1.3μm

    Malins, D. B., Gomez-Iglesias, A., Cataluna, M. A., Rafailov, E. U., Sibbett, W. & Miller, A., 2007.

    Research output: Contribution to conferencePoster

    Activities

    • 2 Participation in conference

    2007 European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference

    Edik U. Rafailov (Participant)

    17 Jun 200722 Jun 2007

    Activity: Participating in or organising an event typesParticipation in conference

    2007 European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference

    Maria Ana Cataluna (Participant)

    17 Jun 200722 Jun 2007

    Activity: Participating in or organising an event typesParticipation in conference

    Cite this

    Malins, D. B., Gomez-Iglesias, A., Cataluna, M. A., Rafailov, E. U., Sibbett, W., & Miller, A. (2007). Temperature dependence of electroabsorption dynamics in an InAs quantum dot saturable absorber at 1.3μm. In 2007 European Conference on Lasers & Electro-Optics and the International Quantum Electronics Conference : Proceedings IEEE. https://doi.org/10.1109/CLEOE-IQEC.2007.4386321