Levitated droplet dye laser

H. Azzouz, L. Alkafadiji, Søren Balslev, J. Johansson, Niels Asger Mortensen, S. Nilsson, Anders Kristensen

    Research output: Contribution to journalJournal articlepeer-review

    531 Downloads (Pure)

    Abstract

    We present the first observation, to our knowledge, of lasing from a levitated, dye droplet. The levitated droplets are created by computer controlled pico-liter dispensing into one of the nodes of a standing ultrasonic wave (100 kHz), where the droplet is trapped. The free hanging droplet forms a high quality optical resonator. Our 750 nL lasing droplets consist of Rhodamine 6G dissolved in ethylene glycol, at a concentration of 0.02 M. The droplets are optically pumped at 532 nm light from a pulsed, frequency doubled Nd:YAG laser, and the dye laser emission is analyzed by a fixed grating spectrometer. With this setup we have achieved reproducible lasing spectra in the visible wavelength range from 610 nm to 650 nm. The levitated droplet technique has previously successfully been applied for a variety of bio-analytical applications at single cell level. In combination with the lasing droplets, the capability of this high precision setup has potential applications within highly sensitive intra-cavity absorbance detection.

    © 2006 Optical Society of America
    Original languageEnglish
    JournalOptics Express
    Volume14
    Issue number10
    Pages (from-to)4374-4379
    ISSN1094-4087
    DOIs
    Publication statusPublished - 2006

    Fingerprint

    Dive into the research topics of 'Levitated droplet dye laser'. Together they form a unique fingerprint.

    Cite this