5 December 2014 Liquid crystal emulsion micro-droplet WGM resonators
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Proceedings Volume 9441, 19th Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics; 944108 (2014) https://doi.org/10.1117/12.2176025
Event: XIX Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 2014, Jelenia Gora, Poland
Abstract
We introduce tunable optofluidic microlasers based on optically stretched or thermally modified, dye-doped emulsion droplets of liquid crystals (LC) confined in a dual-beam optical trap. Droplets were created in microfluidic chips or by shaking. Optically trapped microdroplets emulsified in water and stained with fluorescent dye act as an active ultrahigh-Q optical resonant cavity hosting whispering gallery modes (WGMs). Tuning of the laser emission wavelength was achieved by a controlled deformation of the droplet shape using light-induced forces generated by dual-beam optical trap and by thermal changing of the order in the LC.
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Jan Ježek, Jan Ježek, Zdeněk Pilát, Zdeněk Pilát, Oto Brzobohatý, Oto Brzobohatý, Alexandr Jonáš, Alexandr Jonáš, Mehdi Aas, Mehdi Aas, Alper Kiraz, Alper Kiraz, Pavel Zemánek, Pavel Zemánek, } "Liquid crystal emulsion micro-droplet WGM resonators", Proc. SPIE 9441, 19th Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 944108 (5 December 2014); doi: 10.1117/12.2176025; https://doi.org/10.1117/12.2176025
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