High-specificity molecular sensing on an individual whispering-gallery-mode cavity: coupling-enhanced Raman scattering by photoinduced charge transfer and cavity effects
Xingce Fan, Ru Wang, Mingze Li, Xiao Tang, Chunxiang Xu, Qi Hao, Teng Qiu
Abstract
cavity. The working principles of the proposed sensing method were also systematically investigated in terms of photoinduced charge transfer, Purcell effect, and optical resonance coupling. This work provides a new WGM sensing approach as well as a strategy for the design of a high-performance SERS substrate by creating an optical resonance mode.
Topics & Concepts
Whispering-gallery waveRaman scatteringRaman spectroscopyResonance (particle physics)Coupling (piping)Materials scienceOptoelectronicsCharge (physics)OpticsResonatorPhysicsAtomic physicsMetallurgyQuantum mechanicsPhotonic and Optical DevicesMechanical and Optical ResonatorsAdvanced Fiber Optic Sensors