Mapping anomalous dispersion of air with ultrashort mid-infrared pulses

Abstract We present experimental studies of long-distance transmission of ultrashort mid-infrared laser pulses through atmospheric air, probing air dispersion in the 3.6–4.2-μm wavelength range. Atmospheric air is still highly transparent to electromagnetic radiation in this spectral region, making...

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Autores principales:	A. V. Mitrofanov, A. A. Voronin, D. A. Sidorov-Biryukov, M. V. Rozhko, E. A. Stepanov, A. B. Fedotov, V. Shumakova, S. Ališauskas, A. Pugžlys, A. Baltuška, A. M. Zheltikov
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3ef34de83e40483b80dcde34138fcd96
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spelling	oai:doaj.org-article:3ef34de83e40483b80dcde34138fcd962021-12-02T16:08:08ZMapping anomalous dispersion of air with ultrashort mid-infrared pulses10.1038/s41598-017-01598-32045-2322https://doaj.org/article/3ef34de83e40483b80dcde34138fcd962017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01598-3https://doaj.org/toc/2045-2322Abstract We present experimental studies of long-distance transmission of ultrashort mid-infrared laser pulses through atmospheric air, probing air dispersion in the 3.6–4.2-μm wavelength range. Atmospheric air is still highly transparent to electromagnetic radiation in this spectral region, making it interesting for long-distance signal transmission. However, unlike most of the high-transmission regions in gas media, the group-velocity dispersion, as we show in this work, is anomalous at these wavelengths due to the nearby asymmetric-stretch rovibrational band of atmospheric carbon dioxide. The spectrograms of ultrashort mid-infrared laser pulses transmitted over a distance of 60 m in our experiments provide a map of air dispersion in this wavelength range, revealing clear signatures of anomalous dispersion, with anomalous group delays as long as 1.8 ps detected across the bandwidth covered by 80-fs laser pulses.A. V. MitrofanovA. A. VoroninD. A. Sidorov-BiryukovM. V. RozhkoE. A. StepanovA. B. FedotovV. ShumakovaS. AlišauskasA. PugžlysA. BaltuškaA. M. ZheltikovNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q A. V. Mitrofanov A. A. Voronin D. A. Sidorov-Biryukov M. V. Rozhko E. A. Stepanov A. B. Fedotov V. Shumakova S. Ališauskas A. Pugžlys A. Baltuška A. M. Zheltikov Mapping anomalous dispersion of air with ultrashort mid-infrared pulses
description	Abstract We present experimental studies of long-distance transmission of ultrashort mid-infrared laser pulses through atmospheric air, probing air dispersion in the 3.6–4.2-μm wavelength range. Atmospheric air is still highly transparent to electromagnetic radiation in this spectral region, making it interesting for long-distance signal transmission. However, unlike most of the high-transmission regions in gas media, the group-velocity dispersion, as we show in this work, is anomalous at these wavelengths due to the nearby asymmetric-stretch rovibrational band of atmospheric carbon dioxide. The spectrograms of ultrashort mid-infrared laser pulses transmitted over a distance of 60 m in our experiments provide a map of air dispersion in this wavelength range, revealing clear signatures of anomalous dispersion, with anomalous group delays as long as 1.8 ps detected across the bandwidth covered by 80-fs laser pulses.
format	article
author	A. V. Mitrofanov A. A. Voronin D. A. Sidorov-Biryukov M. V. Rozhko E. A. Stepanov A. B. Fedotov V. Shumakova S. Ališauskas A. Pugžlys A. Baltuška A. M. Zheltikov
author_facet	A. V. Mitrofanov A. A. Voronin D. A. Sidorov-Biryukov M. V. Rozhko E. A. Stepanov A. B. Fedotov V. Shumakova S. Ališauskas A. Pugžlys A. Baltuška A. M. Zheltikov
author_sort	A. V. Mitrofanov
title	Mapping anomalous dispersion of air with ultrashort mid-infrared pulses
title_short	Mapping anomalous dispersion of air with ultrashort mid-infrared pulses
title_full	Mapping anomalous dispersion of air with ultrashort mid-infrared pulses
title_fullStr	Mapping anomalous dispersion of air with ultrashort mid-infrared pulses
title_full_unstemmed	Mapping anomalous dispersion of air with ultrashort mid-infrared pulses
title_sort	mapping anomalous dispersion of air with ultrashort mid-infrared pulses
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/3ef34de83e40483b80dcde34138fcd96
work_keys_str_mv	AT avmitrofanov mappinganomalousdispersionofairwithultrashortmidinfraredpulses AT aavoronin mappinganomalousdispersionofairwithultrashortmidinfraredpulses AT dasidorovbiryukov mappinganomalousdispersionofairwithultrashortmidinfraredpulses AT mvrozhko mappinganomalousdispersionofairwithultrashortmidinfraredpulses AT eastepanov mappinganomalousdispersionofairwithultrashortmidinfraredpulses AT abfedotov mappinganomalousdispersionofairwithultrashortmidinfraredpulses AT vshumakova mappinganomalousdispersionofairwithultrashortmidinfraredpulses AT salisauskas mappinganomalousdispersionofairwithultrashortmidinfraredpulses AT apugzlys mappinganomalousdispersionofairwithultrashortmidinfraredpulses AT abaltuska mappinganomalousdispersionofairwithultrashortmidinfraredpulses AT amzheltikov mappinganomalousdispersionofairwithultrashortmidinfraredpulses
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Mapping anomalous dispersion of air with ultrashort mid-infrared pulses

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