Single-cavity bi-color laser enabled by optical anti-parity-time symmetry

YAO DUAN, XINGWANG ZHANG, YIMIN DING, XINGJIE NI

Research output: Contribution to journalArticlepeer-review

Abstract

The exploration of quantum inspired symmetries in optical systems has spawned promising physics and provided fertile ground for developing devices exhibiting exotic functionalities. Founded on the anti-parity-time (APT) symmetry that is enabled by both spatial and temporal interplay between gain and loss, we demonstrate theoretically and numerically bi-color lasing in a single micro-ring resonator with spatiotemporal modulation along its azimuthal direction. In contrast to conventional multi-mode lasers that have mixed-frequency output, our laser exhibits stable, demultiplexed, tunable bi-color emission at different output ports. Our APT-symmetry-based laser may point out a new route for realizing compact on-chip coherent multi-color light sources.

Original languageEnglish (US)
Pages (from-to)1280-1288
Number of pages9
JournalPhotonics Research
Volume9
Issue number7 July
DOIs
StatePublished - Jul 1 2021

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

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