Practical lineshape of a laser operating near an exceptional point

Abstract We present a practical laser linewidth broadening phenomenon in the viewpoint of high sensitivity of an exceptional point (EP). A stochastic simulation model is implemented to describe the fluctuations in the cavity resonance frequencies. The linewidth originated from external noises are ma...

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Autores principales:	Jinuk Kim, Juman Kim, Jisung Seo, Kyu-Won Park, Songky Moon, Kyungwon An
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e249de2fe356490ea05ff20b59650f77
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spelling	oai:doaj.org-article:e249de2fe356490ea05ff20b59650f772021-12-02T13:17:55ZPractical lineshape of a laser operating near an exceptional point10.1038/s41598-021-85665-w2045-2322https://doaj.org/article/e249de2fe356490ea05ff20b59650f772021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-85665-whttps://doaj.org/toc/2045-2322Abstract We present a practical laser linewidth broadening phenomenon in the viewpoint of high sensitivity of an exceptional point (EP). A stochastic simulation model is implemented to describe the fluctuations in the cavity resonance frequencies. The linewidth originated from external noises are maximized at the EP. The linewidth enhancement factor behaves similarly to the Petermann factor although the Petermann effect is not considered. In the long coherence time limit, the power spectral density of the laser exhibits a splitting in the vicinity of the EP although the cavity eigenfrequencies coalesce at the EP.Jinuk KimJuman KimJisung SeoKyu-Won ParkSongky MoonKyungwon AnNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jinuk Kim Juman Kim Jisung Seo Kyu-Won Park Songky Moon Kyungwon An Practical lineshape of a laser operating near an exceptional point
description	Abstract We present a practical laser linewidth broadening phenomenon in the viewpoint of high sensitivity of an exceptional point (EP). A stochastic simulation model is implemented to describe the fluctuations in the cavity resonance frequencies. The linewidth originated from external noises are maximized at the EP. The linewidth enhancement factor behaves similarly to the Petermann factor although the Petermann effect is not considered. In the long coherence time limit, the power spectral density of the laser exhibits a splitting in the vicinity of the EP although the cavity eigenfrequencies coalesce at the EP.
format	article
author	Jinuk Kim Juman Kim Jisung Seo Kyu-Won Park Songky Moon Kyungwon An
author_facet	Jinuk Kim Juman Kim Jisung Seo Kyu-Won Park Songky Moon Kyungwon An
author_sort	Jinuk Kim
title	Practical lineshape of a laser operating near an exceptional point
title_short	Practical lineshape of a laser operating near an exceptional point
title_full	Practical lineshape of a laser operating near an exceptional point
title_fullStr	Practical lineshape of a laser operating near an exceptional point
title_full_unstemmed	Practical lineshape of a laser operating near an exceptional point
title_sort	practical lineshape of a laser operating near an exceptional point
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/e249de2fe356490ea05ff20b59650f77
work_keys_str_mv	AT jinukkim practicallineshapeofalaseroperatingnearanexceptionalpoint AT jumankim practicallineshapeofalaseroperatingnearanexceptionalpoint AT jisungseo practicallineshapeofalaseroperatingnearanexceptionalpoint AT kyuwonpark practicallineshapeofalaseroperatingnearanexceptionalpoint AT songkymoon practicallineshapeofalaseroperatingnearanexceptionalpoint AT kyungwonan practicallineshapeofalaseroperatingnearanexceptionalpoint
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Practical lineshape of a laser operating near an exceptional point

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