Directional bistability and nonreciprocal lasing with cold atoms in a ring cavity

B. Megyeri; G. Harvie; A. Lampis; J. Goldwin

doi:10.1103/PhysRevLett.121.163603

Directional bistability and nonreciprocal lasing with cold atoms in a ring cavity

B. Megyeri, G. Harvie, A. Lampis, J. Goldwin^*

^*Corresponding author for this work

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

289 Downloads (Pure)

Abstract

We demonstrate lasing into counterpropagating modes of a ring cavity using a gas of cold atoms as a gain medium. The laser operates under the usual conditions of magneto-optical trapping with no additional fields. We characterize the threshold behavior of the laser and measure the second-order optical coherence. The laser emission exhibits directional bistability, switching randomly between clockwise and counterclockwise modes, and a tunable nonreciprocity is observed as the atoms are displaced along the cavity axis.

Original language	English
Article number	163603
Number of pages	5
Journal	Physical Review Letters
Volume	121
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevLett.121.163603
Publication status	Published - 19 Oct 2018

Keywords

lasers
cavity quantum electrodynamics
Cold atoms
Quantum optics
nonlinear optics
atomic, molecular & optical

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.1103/PhysRevLett.121.163603Licence: None: All rights reserved

Megyeri_et_al_Directional_bistability_Physical_Review_Letters_2018
Checked for eligibility 23/10/2018 Directional Bistability and Nonreciprocal Lasing with Cold Atoms in a Ring Cavity B. Megyeri, G. Harvie, A. Lampis, and J. Goldwin Phys. Rev. Lett. 121, 163603 – Published 19 October 2018 https://doi.org/10.1103/PhysRevLett.121.163603
Accepted author manuscript, 906 KBLicence: None: All rights reserved

https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.121.163603

PhD Student Balazs Megyeri - Dispersion Controlled Cold Atom Ring Laser for Precision Timing and Sensing
Goldwin, J. (Principal Investigator)
Defence and Science Technology Laboratory
1/10/14 → 30/09/18
Project: Other Government Departments
Collective Strong Coupling of Light and Matter with Cold Atoms in a Ring Resonator
Goldwin, J. (Principal Investigator)
Engineering & Physical Science Research Council
30/05/12 → 29/05/14
Project: Research

Cite this

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Directional bistability and nonreciprocal lasing with cold atoms in a ring cavity

Abstract

Keywords

ASJC Scopus subject areas

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Projects

PhD Student Balazs Megyeri - Dispersion Controlled Cold Atom Ring Laser for Precision Timing and Sensing

Collective Strong Coupling of Light and Matter with Cold Atoms in a Ring Resonator

Cite this