Controlling nonlinear interaction in a many-mode laser by tuning disorder
arXiv:2109.04902 · doi:10.1103/PhysRevLett.128.143901
Abstract
A many-mode laser with nonlinear modal interaction could serve as a model system to study many-body physics. However, precise and continuous tuning of the interaction strength over a wide range is challenging. Here, we present a unique method for controlling lasing mode structures by introducing random phase fluctuation to a nearly degenerate cavity. We show numerically and experimentally that as the characteristic scale of phase fluctuation decreases by two orders of magnitude, the transverse modes become fragmented and the reduction of their spatial overlap suppresses modal competition for gain, allowing more modes to lase. The tunability, flexibility and robustness of our system provides a powerful platform for investigating many-body phenomena.
arXiv comment5 pages, 3 figures. Yaniv Eliezer and Simon Mahler contributed equally
References in corpus (22)
- Many-body localization, thermalization, and entanglement
- Realizing the Hamiltonian in polariton simulators
- Anderson localization in Bose-Einstein condensates
- Experimental evidence of replica symmetry breaking in random lasers
- Adaptive pumping for spectral control of random lasers
- Self-consistent multi-mode lasing theory for complex or random lasing media
- Complex Lasers with Controllable Coherence
- Taming random lasers through active spatial control of the pump
- Steady-state Ab Initio Laser Theory: Generalizations and Analytic Results
- Cold atoms in the presence of disorder
- Mode Repulsion and Mode Coupling in Random Lasers
- Glassy behavior of light
- General phase-diagram of multimodal ordered and disordered lasers in closed and open cavities
- Active subnanometer spectral control of a random laser
- Rapid Phase Retrieval by Lasing
- Disorder-Induced Order in Two-Component Bose-Einstein Condensates
- Enhancement of Laser Power Efficiency by Control of Spatial Hole Burning Interactions
- Rapid fair sampling of XY spin Hamiltonian with a laser simulator
- Accelerating speckle suppression by a degenerate cavity laser with an intracavity phase diffuser
- Switching and amplification in disordered lasing resonators
- Tunable degree of localization in random lasers with controlled interaction
- Semilinear response for the heating rate of cold atoms in vibrating traps