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Spectral tuning of lasing emission from optofluidic droplet microlasers using optical stretching
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SYSNO ASEP 0397688 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Spectral tuning of lasing emission from optofluidic droplet microlasers using optical stretching Author(s) Aas, M. (TR)
Jonáš, A. (CZ)
Kiraz, A. (TR)
Ježek, Jan (UPT-D) RID, ORCID, SAI
Brzobohatý, Oto (UPT-D) RID, ORCID, SAI
Pilát, Zdeněk (UPT-D) RID, SAI, ORCID
Zemánek, Pavel (UPT-D) RID, SAI, ORCIDNumber of authors 7 Source Title Optics Express. - : Optical Society of America - ISSN 1094-4087
Roč. 21, č. 18 (2013), s. 21380-21394Number of pages 15 s. Publication form Print - P Language eng - English Country US - United States Keywords Microcavities ; Dye lasers ; Optical tweezers ; Optical manipulation ; Fluorescence, laser-induced Subject RIV BH - Optics, Masers, Lasers R&D Projects GPP205/11/P294 GA ČR - Czech Science Foundation (CSF) ED0017/01/01 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) TA03010642 GA TA ČR - Technology Agency of the Czech Republic (TA ČR) Institutional support UPT-D - RVO:68081731 UT WOS 000324867100102 EID SCOPUS 84884586091 DOI 10.1364/OE.21.021380 Annotation We introduce tunable optofluidic microlasers based on active optical resonant cavities formed by optically stretched, dye-doped emulsion droplets confined in a dual-beam optical trap. To achieve tunable dye lasing, optically pumped droplets of oil dispersed in water are stretched by light in the dual-beam trap. Subsequently, resonant path lengths of whispering gallery modes (WGMs) propagating in the droplet are modified, leading to shifts in the microlaser emission wavelengths. Using this technique, we present all-optical, almost reversible spectral tuning of the lasing WGMs and show that the direction of tuning depends on the position of the pump beam focus on the droplet. In addition, we study the effects of temperature changes on the spectral position of lasing WGMs and demonstrate that droplet heating leads to red-tuning of the droplet lasing wavelength. Workplace Institute of Scientific Instruments Contact Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178 Year of Publishing 2014
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