Stable coherent mode-locking based on $$\pi$$ π pulse formation in single-section lasers

Stable coherent mode-locking based on $$\pi$$ π pulse formation in single-section lasers

Abstract Here we consider coherent mode-locking (CML) regimes in single-section cavity lasers, taking place for pulse durations less than atomic population and phase relaxation times, which arise due to coherent Rabi oscillations of the atomic inversion. Typically, CML is introduced for lasers with...

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Autores principales: Rostislav Arkhipov, Anton Pakhomov, Mikhail Arkhipov, Ihar Babushkin, Nikolay Rosanov
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2021
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Acceso en línea:https://doaj.org/article/5e0f962b0f92455e9eee79db115e692f
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spelling oai:doaj.org-article:5e0f962b0f92455e9eee79db115e692f2021-12-02T14:12:42ZStable coherent mode-locking based on $$\pi$$ π pulse formation in single-section lasers10.1038/s41598-020-80775-32045-2322https://doaj.org/article/5e0f962b0f92455e9eee79db115e692f2021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-80775-3https://doaj.org/toc/2045-2322Abstract Here we consider coherent mode-locking (CML) regimes in single-section cavity lasers, taking place for pulse durations less than atomic population and phase relaxation times, which arise due to coherent Rabi oscillations of the atomic inversion. Typically, CML is introduced for lasers with two sections, the gain and absorber ones. Here we show that, for certain combination of the cavity length and relaxation parameters, a very stable CML in a laser, containing only gain section, may arise. The mode-locking is unconditionally self-starting and appears due to balance of intra-pulse de-excitation and slow interpulse-scale pump-induced relaxation processes. We also discuss the scaling of the system to shorter pulse durations, showing a possibility of mode-locking for few-cycle pulses.Rostislav ArkhipovAnton PakhomovMikhail ArkhipovIhar BabushkinNikolay RosanovNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Rostislav Arkhipov
Anton Pakhomov
Mikhail Arkhipov
Ihar Babushkin
Nikolay Rosanov
Stable coherent mode-locking based on $$\pi$$ π pulse formation in single-section lasers
description Abstract Here we consider coherent mode-locking (CML) regimes in single-section cavity lasers, taking place for pulse durations less than atomic population and phase relaxation times, which arise due to coherent Rabi oscillations of the atomic inversion. Typically, CML is introduced for lasers with two sections, the gain and absorber ones. Here we show that, for certain combination of the cavity length and relaxation parameters, a very stable CML in a laser, containing only gain section, may arise. The mode-locking is unconditionally self-starting and appears due to balance of intra-pulse de-excitation and slow interpulse-scale pump-induced relaxation processes. We also discuss the scaling of the system to shorter pulse durations, showing a possibility of mode-locking for few-cycle pulses.
format article
author Rostislav Arkhipov
Anton Pakhomov
Mikhail Arkhipov
Ihar Babushkin
Nikolay Rosanov
author_facet Rostislav Arkhipov
Anton Pakhomov
Mikhail Arkhipov
Ihar Babushkin
Nikolay Rosanov
author_sort Rostislav Arkhipov
title Stable coherent mode-locking based on $$\pi$$ π pulse formation in single-section lasers
title_short Stable coherent mode-locking based on $$\pi$$ π pulse formation in single-section lasers
title_full Stable coherent mode-locking based on $$\pi$$ π pulse formation in single-section lasers
title_fullStr Stable coherent mode-locking based on $$\pi$$ π pulse formation in single-section lasers
title_full_unstemmed Stable coherent mode-locking based on $$\pi$$ π pulse formation in single-section lasers
title_sort stable coherent mode-locking based on $$\pi$$ π pulse formation in single-section lasers
publisher Nature Portfolio
publishDate 2021
url https://doaj.org/article/5e0f962b0f92455e9eee79db115e692f
work_keys_str_mv AT rostislavarkhipov stablecoherentmodelockingbasedonpippulseformationinsinglesectionlasers
AT antonpakhomov stablecoherentmodelockingbasedonpippulseformationinsinglesectionlasers
AT mikhailarkhipov stablecoherentmodelockingbasedonpippulseformationinsinglesectionlasers
AT iharbabushkin stablecoherentmodelockingbasedonpippulseformationinsinglesectionlasers
AT nikolayrosanov stablecoherentmodelockingbasedonpippulseformationinsinglesectionlasers
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