Tunable WGM resonators from optically trapped dye doped liquid crystal emulsion droplets

0434982 - ÚPT 2015 RIV US eng C - Conference Paper (international conference)
Šerý, Mojmír - Pilát, Zdeněk - Ježek, Jan - Aas, M. - Kiraz, A. - Zemánek, Pavel
Tunable WGM resonators from optically trapped dye doped liquid crystal emulsion droplets.
Optical Trapping and Optical Micromanipulation XI (Proceedings of SPIE 9164). Bellingham: SPIE, 2014, 916434:1-8. ISBN 9781628411911. ISSN 0277-786X.
[Optical Trapping and Optical Micromanipulation /11./. San Diego (US), 17.08.2014-21.08.2014]
R&D Projects: GA MŠMT(CZ) LD14069; GA MŠMT(CZ) LO1212; GA TA ČR TA03010642; GA MŠMT ED0017/01/01
Institutional support: RVO:68081731
Keywords : Liquid crystals * Resonators * Optical trapping
Subject RIV: BH - Optics, Masers, Lasers

We have built a complex apparatus for optical trapping, stretching, heating and concurrent whispering gallery mode (WGM) lasing excitation of liquid crystal (LC) emulsion micro-droplets doped with various fluorescent dyes. We have explored the changes of WGM lasing wavelength when the LC droplets were optically stretched or electrically heated beyond the transition to the isotropic phase. We have found that the range of lasing wavelengths was in some cases considerably higher than when we optically stretched ordinary fluorescent oil droplets in our previous experiments.
Permanent Link: http://hdl.handle.net/11104/0238913