Collective excitations and instability of an optical lattice due to unbalanced pumping

Abstract

We solve self-consistently the coupled equations of motion for trapped particles and the field of a one-dimensional optical lattice. Optomechanical coupling creates long-range interaction between the particles, whose nature depends crucially on the relative power of the pump beams. For asymmetric pumping, traveling density wave-like collective oscillations arise in the lattice, even in the overdamped limit. Increasing the lattice size or pump asymmetry these waves can destabilize the lattice.

5 pages, minor changes (SI units, new references)

References in corpus (4)

• Radiation-pressure cooling and optomechanical instability of a micro-mirror
• Self-cooling of a micro-mirror by radiation pressure
• Phonons in a one-dimensional microfluidic crystal
• Self-driven nonlinear dynamics in magneto-optical traps

Cited by in corpus (5)

• Scattering theory of cooling and heating in opto-mechanical systems
• Hybrid Quantum System of a Nanofiber Mode Coupled to Two Chains of Optically Trapped Atoms
• Enhancing Light-Atom Interactions via Atomic Bunching
• Exploring phonon-like interactions in one-dimensional Bose-Fermi mixtures
• Observe novel tricritical phenomena in self-organized Fermi gas induced by higher order Fermi surface nesting