Parametric Oscillation, Frequency Mixing, and Injection Locking of Strongly Coupled Nanomechanical Resonator Modes

Nonadiabatic dynamics of two strongly coupled nanomechanical resonator modes.

The Landau-Zener transition is a fundamental concept for dynamical quantum systems and has been studied in numerous fields of physics. Here, we present a classical mechanical model system exhibiting analogous behavior using two inversely tunable, strongly coupled modes of the same nanomechanical beam resonator. In the adiabatic limit, the anticrossing between the two modes is observed and the c...

Resonator coupled Josephson junctions; parametric excitations and mutual locking

Frequency Locking in a Degenerate Polarization Mixing Optical Parametric Oscillator

A polarization mixing OPO was demonstrated, that emits a single, linearly polarized narrow linewidth beam, fixed at degeneracy, independent of crystal temperature. The frequency locking is explained in terms of balanced roundtrip phase-matching condition. ©2005 Optical Society of America OCIS codes: (190.2620) Frequency conversion; (190.4410) Nonlinear optics, parametric processes; (190.4970) P...

Synchronized oscillation in coupled nanomechanical oscillators.

We report measurements of synchronization in two nanomechanical beam oscillators coupled by a mechanical element. We charted multiple regions of frequency entrainment or synchronization by their corresponding Arnold's tongue diagrams as the oscillator was driven at subharmonic and rational commensurate frequencies. Demonstration of multiple synchronized regions could be fundamentally important ...

Low frequency modes in strongly coupled dusty plasmas

The influence of strong correlations on low frequency collective modes in a dusty plasma is investigated. The dust dynamics is modeled by the generalized hydrodynamics description. For the well known dust acoustic mode, strong correlations lead to new dispersive corrections, an overall reduction of the frequency and phase velocity and the existence of parameter regions where ]v/]k,0. A novel re...