Event Details
Cavity Optomechanical Oscillation Locking
Presenter: Jinshuai Gan
Supervisor:
Date: Sun, December 1, 2024
Time: 11:00:00 - 00:00:00
Place: Zoom, link below.
ABSTRACT
Abstract:
Optical microcavities have emerged as powerful tools for detecting single molecules and nanoparticles due to their exceptional sensitivity and label-free operation. However, the performance of ultra-high-Q microcavities is highly vulnerable to factors such as temperature fluctuations, mechanical vibrations, and laser frequency drifts, all of which can destabilize laser-cavity detuning. Optomechanical oscillation (OMO), a phenomenon driven by radiation pressure within the cavity, offers significant advantages for liquid-based sensing, but requires precise conditions and a high cavity quality factor. In this thesis, we demonstrate stable, long-term OMO in an aqueous environment by implementing a Proportional-Integral (PI) locking scheme.
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