Affiliation:
1. School of Physics and Astronomy University of St Andrews North Haugh St. Andrews Scotland KY16 9SS UK
2. Humboldt Centre for Nano‐ and Biophotonics Department of Chemistry University of Cologne Greinstr. 4–6 50939 Cologne Germany
Abstract
AbstractWhispering 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.
Funder
HORIZON EUROPE European Research Council
Alexander von Humboldt-Stiftung
Subject
Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials