Optically manipulated micromirrors for precise excitation of WGM microlasers

Tomasz T. Plaskocinski, Libin Yan, Marcel Schubert, Malte C. Gather, Andrea Di Falco*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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Whispering gallery mode microlasers are highly sensitive refractive index sensors widely explored for biophotonic and biomedical applications. Microlaser excitation and collection of the emitted light typically utilize microscope objectives at normal incidence, limiting the choice of the oscillation plane of the modes. Here, a platform that enables the excitation of microlasers from various directions using an optically manipulated micromirror is presented. The scheme enables precise sensing of the environment surrounding the microlasers along different well-controlled planes. The capability of the platform to perform a time-resolved experiment of dynamic sensing using a polystyrene probe bead orbiting the microlaser is further demonstrated.
Original languageEnglish
Article number2302024
Number of pages9
JournalAdvanced Optical Materials
VolumeEarly View
Early online date7 Dec 2023
Publication statusE-pub ahead of print - 7 Dec 2023


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