Temperature-induced tuning of emission spectra of liquid-crystal optical microcavities

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F16%3A00468521" target="_blank" >RIV/68081731:_____/16:00468521 - isvavai.cz</a>
Result on the web
<a href="http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=2595351" target="_blank" >http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=2595351</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1117/12.2262495" target="_blank" >10.1117/12.2262495</a>

Result language
angličtina
Original language name
Temperature-induced tuning of emission spectra of liquid-crystal optical microcavities
Original language description
Emulsion droplets of liquid crystals (LC) suspended in water and labeled with a suitable fluorescent dye can serve as active optofluidic microcavities, since the contrast of refractive index between the LC droplets and the surrounding aqueous medium allows excitation of whispering gallery modes (WGMs) in the droplets. In addition, such emulsion droplets can be also stably trapped in three-dimensions using optical tweezers which stabilizes the droplets while investigating their spectral characteristics. We explore various combinations of fluorescently dyed LC droplets and host liquid - surfactant systems and show that the WGM emission spectrum of an optically trapped LC droplet-based cavity can be largely and (almost) reversibly tuned by controlled changes of the ambient temperature that induce phase transitions in the LC droplets. Our results indicate feasibility of this approach for creating miniature tunable sources of coherent light.
Czech name
—
Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
20th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics (Proceedings of SPIE 10142)
ISBN
—
ISSN
0277-786X
e-ISSN
—
Number of pages
9
Pages from-to
1-9
Publisher name
SPIE
Place of publication
Bellingham
Event location
Jasná
Event date
Sep 5, 2016
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000393152700014

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