Title

Parity-time-symmetric microring lasers

Authors

Authors

H. Hodaei; M. A. Miri; M. Heinrich; D. N. Christodoulides;M. Khajavikhan

Comments

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Abbreviated Journal Title

Science

Keywords

SEMICONDUCTOR-LASERS; MICROCAVITIES; Multidisciplinary Sciences

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 PT symmetry 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.

Journal Title

Science

Volume

346

Issue/Number

6212

Publication Date

1-1-2014

Document Type

Article

Language

English

First Page

975

Last Page

978

WOS Identifier

WOS:000345696000038

ISSN

0036-8075

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