Title

Parity-Time-Symmetric Microring Lasers

Abstract

The ability to control the modes oscillating within a laser resonator is of fundamental importance. In general, the presence of competing modes can be detrimental to beam quality and spectral purity, thus leading to spatial as well as temporal fluctuations in the emitted radiation.We show that by harnessing notions from parity-time (PT) symmetry, stable single - longitudinal mode operation can be readily achieved in a system of coupled microring lasers.The selective breaking of PTsymmetry can be used to systematically enhance the maximum attainable output power in the desired mode.This versatile concept is inherently self-adapting and facilitates mode selectivity over a broad bandwidth without the need for other additional intricate components. Our experimental findings provide the possibility to develop synthetic optical devices and structures with enhanced functionality.

Publication Date

11-21-2014

Publication Title

Science

Volume

346

Issue

6212

Number of Pages

975-978

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1126/science.1258480

Socpus ID

84911437763 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84911437763

This document is currently not available here.

Share

COinS