Investigation of the dye concentration influence on the lasing wavelength and threshold for a micro-fluidic dye laser

Bjarne Helbo, Søren Kragh, B.G. Kjeldsen, J.L. Reimers, Anders Kristensen

    Research output: Contribution to journalConference articleResearchpeer-review

    Abstract

    We investigate a micro-fluidic dye laser, which can be integrated with polymer-based lab-on-a-chip microsystems without further processing steps. A simple rate-equation model is used to predict the lasing threshold. The laser device is characterised using the laser dye Rhodamine 6G dissolved in ethanol, and the influence of dye concentration on the lasing wavelength and threshold is investigated. The experiments confirm the predictions of the rate-equation model, that lasing can be achieved in the 10 mum long laser cavity with moderate concentrations of Rhodamine 6G in ethanol, starting from 5 x 10(-3) mol/I. We also find that the lasing wavelength can be tuned between 565 and 593 nm, controlled by the dye concentration. (C) 2003 Elsevier B.V. All rights reserved.
    Original languageEnglish
    JournalSensors and Actuators A: Physical
    Volume111
    Issue number1
    Pages (from-to)21-25
    ISSN0924-4247
    DOIs
    Publication statusPublished - 2003
    EventSixteenth IEEE Annual International Conference on Micro Electro Mechanical Systems - Kyoto, Japan
    Duration: 19 Jan 200323 Jan 2003

    Conference

    ConferenceSixteenth IEEE Annual International Conference on Micro Electro Mechanical Systems
    CountryJapan
    CityKyoto
    Period19/01/200323/01/2003

    Keywords

    • micro-fluidic dye laser
    • rhodamine 6G
    • rate-equation model

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