{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["12(21)"],"submitter":["Ge K"],"pubmed_abstract":["Wavelength switchable microcavity is indispensable component for various integrated photonic devices. However, achieving two wavelength band emission of the whispering gallery mode (WGM) laser is challenging. Here, we propose a strategy to realize two wavelength band emission WGM lasers activated by photo-isomerization based on excited-state intramolecular proton transfer (ESIPT) process in isolated/coupled polymer microfiber cavities. The WGM microcavity is built by highly polarized organic intramolecular charge-transfer (ICT) dye molecules. The two cooperative gain states of ICT dye molecules can be controlled by optimizing energy levels. Thereby, the lasing wavelength can be reversibly switched under photo-isomerization activated in the ESIPT energy-level progress. The photonic bar code can be generated by following the strategy of proposed design. This work provides a promising route to achieve switchable WGM laser in on-chip photonic integration."],"journal":["Nanophotonics (Berlin, Germany)"],"pagination":["4087-4094"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC11502004"],"repository":["biostudies-literature"],"pubmed_title":["Two wavelength band emission WGM lasers via photo-isomerization."],"pmcid":["PMC11502004"],"pubmed_authors":["Ruan J","Zhai T","Cui L","Ge K","Guo D","Liang N","Iqbal N"],"additional_accession":[]},"is_claimable":false,"name":"Two wavelength band emission WGM lasers via photo-isomerization.","description":"Wavelength switchable microcavity is indispensable component for various integrated photonic devices. However, achieving two wavelength band emission of the whispering gallery mode (WGM) laser is challenging. Here, we propose a strategy to realize two wavelength band emission WGM lasers activated by photo-isomerization based on excited-state intramolecular proton transfer (ESIPT) process in isolated/coupled polymer microfiber cavities. The WGM microcavity is built by highly polarized organic intramolecular charge-transfer (ICT) dye molecules. The two cooperative gain states of ICT dye molecules can be controlled by optimizing energy levels. Thereby, the lasing wavelength can be reversibly switched under photo-isomerization activated in the ESIPT energy-level progress. The photonic bar code can be generated by following the strategy of proposed design. This work provides a promising route to achieve switchable WGM laser in on-chip photonic integration.","dates":{"release":"2023-01-01T00:00:00Z","publication":"2023 Oct","modification":"2025-04-27T02:08:57.913Z","creation":"2025-04-06T18:32:23.871Z"},"accession":"S-EPMC11502004","cross_references":{"pubmed":["39635642"],"doi":["10.1515/nanoph-2023-0522"]}}