Dye lasing in optically manipulated liquid aerosols

Y. Karadag, M. Aas, S. Anand, D. McGloin, A. Kiraz

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    18 Citations (Scopus)
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    We report lasing in airborne, rhodamine B-doped glycerol–water droplets with diameters ranging between 7.7 and 11.0 µm, which were localized using optical tweezers. While being trapped near the focal point of an infrared laser, the droplets were pumped with a Q-switched green laser. Our experiments revealed nonlinear dependence of the intensity of the droplet whispering gallery modes (WGMs) on the pump laser fluence, indicating dye lasing. The average wavelength of the lasing WGMs could be tuned between 600 and 630 nm by changing the droplet size. These results may lead to new ways of probing airborne particles, exploiting the high sensitivity of stimulated emission to small perturbations in the droplet laser cavity and the gain medium.

    © 2013 Optical Society of America

    This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/ol/abstract.cfm?uri=ol-38-10-1669. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
    Original languageEnglish
    Pages (from-to)1669-1671
    Number of pages3
    JournalOptics Letters
    Issue number10
    Publication statusPublished - 2013


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