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Proceedings Paper

Liquid crystal emulsion micro-droplet WGM resonators
Author(s): Jan Ježek; Zdeněk Pilát; Oto Brzobohatý; Alexandr Jonáš; Mehdi Aas; Alper Kiraz; Pavel Zemánek
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Paper 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.

Paper Details

Date Published: 5 December 2014
PDF: 9 pages
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
Show Author Affiliations
Jan Ježek, ASCR, Institute of Scientific Instruments (Czech Republic)
Zdeněk Pilát, ASCR, Institute of Scientific Instruments (Czech Republic)
Oto Brzobohatý, ASCR, Institute of Scientific Instruments (Czech Republic)
Alexandr Jonáš, Koç Univ. (Turkey)
Istanbul Technical Univ. (Turkey)
Mehdi Aas, Koç Univ. (Turkey)
Alper Kiraz, Koç Univ. (Turkey)
Pavel Zemánek, ASCR, Institute of Scientific Instruments (Czech Republic)


Published in SPIE Proceedings Vol. 9441:
19th Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics
Agnieszka Popiolek-Masajada; Waclaw Urbanczyk, Editor(s)

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