Controllable optomechanical coupling and Drude self-pulsation plasma locking in chip-scale optomechanical cavities

Area of Science:

• Optomechanics
• Nonlinear Dynamics
• Plasma Physics

Background:

• Optomechanical systems couple optical and mechanical motion.
• Nonlinear dynamics in mesoscopic systems are crucial for advanced applications.
• Plasma behavior in confined optical cavities presents unique phenomena.

Purpose of the Study:

• To demonstrate controllable optomechanical coupling.
• To achieve Drude self-pulsation plasma locking.
• To explore nonlinear dynamics in chip-scale optomechanical cavities.

Main Methods:

• Utilizing chip-scale optomechanical cavities.
• Modulating optomechanical coupling via intracavity energy and fiber position.
• Observing self-pulsation and locking phenomena.

Main Results:

• Controllable optomechanical coupling demonstrated.
• Drude self-pulsation plasma locking achieved.
• 1/6 subharmonic locking observed over a broad optical detuning range (190.01-192.23 THz).
• Deterministic optomechanical stiffening enabled control over oscillation and self-pulsation interactions.

Conclusions:

• The study provides new insights into mesoscopic nonlinear dynamics.
• Potential applications include photonic signal processing and nonlinear dynamic networks.
• Controllable coupling and locking pave the way for novel device functionalities.