Publication Date:
2014-11-22
Description:
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.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hodaei, Hossein -- Miri, Mohammad-Ali -- Heinrich, Matthias -- Christodoulides, Demetrios N -- Khajavikhan, Mercedeh -- New York, N.Y. -- Science. 2014 Nov 21;346(6212):975-8. doi: 10.1126/science.1258480. Epub 2014 Oct 30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉CREOL, The College of Optics and Photonics, University of Central Florida, Orlando, FL 32816-2700, USA. ; CREOL, The College of Optics and Photonics, University of Central Florida, Orlando, FL 32816-2700, USA. mercedeh@creol.ucf.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25414308" target="_blank"〉PubMed〈/a〉
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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