A switchable multimode microlaser based on an AIE microsphere

Fengyan Song, Chunhuan Zhang, Haiyun Dong, Yuqin Fan, Ming Yu Wu, Guogang Shan, Puxiang Lai, Hui Gao, Yong Sheng Zhao, Sijie Chen

Research output: Journal article publicationJournal articleAcademic researchpeer-review

4 Citations (Scopus)


Switchable multimode microlasers are of great significance to the development of photonic devices with high integration levels. Herein, we demonstrate an acid/alkaline gas-responsive multimode AIEgen@starch microsphere-based microlaser. The aggregation-induced emission (AIE) active fluorescent dye ASCPI was used as the gain medium in this study. ASCPI was weakly emissive in water but became highly emissive when introduced to a starch microsphere as a guest molecule. The resultant ASCPI@starch microsphere worked well as a typical whispering-gallery-mode microlaser. The laser mode wavelengths were size-dependent. Due to the sensitivity of ASCPI to pH, the output of the microlaser could be switched to a shorter wavelength by acetic acid vapor treatment or a longer wavelength by NH3vapor treatment. This work will provide useful enlightenment for the rational design of effective switchable lasers using AIE materials with simple preparation procedures.

Original languageEnglish
Pages (from-to)11180-11188
Number of pages9
JournalJournal of Materials Chemistry C
Issue number34
Publication statusPublished - 14 Sept 2021

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry


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