Controlled assembly of organic whispering-gallery-mode microlasers as highly sensitive chemical vapor sensors

We demonstrate the fabrication of organic high Q active whispering-gallery-mode (WGM) resonators from π-conjugated polymer by a controlled emulsion-solvent-evaporation method, which can simultaneously provide optical gain and act as an effective resonant cavity. By measuring the shift of their lasin...

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Bibliographic Details
Published inChemical communications (Cambridge, England) Vol. 53; no. 21; pp. 3102 - 3105
Main Authors Gao, Miaomiao, Wei, Cong, Lin, Xianqing, Liu, Yuan, Hu, Fengqin, Zhao, Yong Sheng
Format Journal Article
LanguageEnglish
Published England 09.03.2017
Subjects
Assembly
chemical reactions
detection limit
Gain
lasers
Lasing
Microlasers
Monitoring
Optical sensors
polymers
Reproducibility
Strategy
vapors
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Summary:We demonstrate the fabrication of organic high Q active whispering-gallery-mode (WGM) resonators from π-conjugated polymer by a controlled emulsion-solvent-evaporation method, which can simultaneously provide optical gain and act as an effective resonant cavity. By measuring the shift of their lasing modes on exposure to organic vapor, we successfully monitored the slight concentration variation in the chemical gas. These microlaser sensors demonstrated high detection sensitivity and good signal repeatability under continuous chemical gas treatments. The results offer an effective strategy to design miniaturized optical sensors.
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ISSN:1359-7345
1364-548X
1364-548X
DOI:10.1039/C6CC08094D