Controlling Nonlinear Interaction in a Many-Mode Laser by Tuning Disorder

Yaniv Eliezer, Simon Mahler, Asher A. Friesem, Hui Cao, Nir Davidson

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish
Article number143901
JournalPhysical Review Letters
Issue number14
StatePublished - 8 Apr 2022

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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