Efficient High-Power Ultrashort Pulse Compression in Self-Defocusing Bulk Media

Abstract Peak and average power scalability is the key feature of advancing femtosecond laser technology. Today, near-infrared light sources are capable of providing hundreds of Watts of average power. These sources, however, scarcely deliver pulses shorter than 100 fs which are, for instance, highl...

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Autores principales:	Marcus Seidel, Jonathan Brons, Gunnar Arisholm, Kilian Fritsch, Vladimir Pervak, Oleg Pronin
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/30398986dbfa4ea38e259979857d3826
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spelling	oai:doaj.org-article:30398986dbfa4ea38e259979857d38262021-12-02T11:41:11ZEfficient High-Power Ultrashort Pulse Compression in Self-Defocusing Bulk Media10.1038/s41598-017-01504-x2045-2322https://doaj.org/article/30398986dbfa4ea38e259979857d38262017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01504-xhttps://doaj.org/toc/2045-2322Abstract Peak and average power scalability is the key feature of advancing femtosecond laser technology. Today, near-infrared light sources are capable of providing hundreds of Watts of average power. These sources, however, scarcely deliver pulses shorter than 100 fs which are, for instance, highly beneficial for frequency conversion to the extreme ultraviolet or to the mid- infrared. Therefore, the development of power scalable pulse compression schemes is still an ongoing quest. This article presents the compression of 90 W average power, 190 fs pulses to 70 W, 30 fs. An increase in peak power from 18 MW to 60 MW is achieved. The compression scheme is based on cascaded phase-mismatched quadratic nonlinearities in BBO crystals. In addition to the experimental results, simulations are presented which compare spatially resolved spectra of pulses spectrally broadened in self-focusing and self-defocusing media, respectively. It is demonstrated that balancing self- defocusing and Gaussian beam convergence results in an efficient, power-scalable spectral broadening mechanism in bulk material.Marcus SeidelJonathan BronsGunnar ArisholmKilian FritschVladimir PervakOleg ProninNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Marcus Seidel Jonathan Brons Gunnar Arisholm Kilian Fritsch Vladimir Pervak Oleg Pronin Efficient High-Power Ultrashort Pulse Compression in Self-Defocusing Bulk Media
description	Abstract Peak and average power scalability is the key feature of advancing femtosecond laser technology. Today, near-infrared light sources are capable of providing hundreds of Watts of average power. These sources, however, scarcely deliver pulses shorter than 100 fs which are, for instance, highly beneficial for frequency conversion to the extreme ultraviolet or to the mid- infrared. Therefore, the development of power scalable pulse compression schemes is still an ongoing quest. This article presents the compression of 90 W average power, 190 fs pulses to 70 W, 30 fs. An increase in peak power from 18 MW to 60 MW is achieved. The compression scheme is based on cascaded phase-mismatched quadratic nonlinearities in BBO crystals. In addition to the experimental results, simulations are presented which compare spatially resolved spectra of pulses spectrally broadened in self-focusing and self-defocusing media, respectively. It is demonstrated that balancing self- defocusing and Gaussian beam convergence results in an efficient, power-scalable spectral broadening mechanism in bulk material.
format	article
author	Marcus Seidel Jonathan Brons Gunnar Arisholm Kilian Fritsch Vladimir Pervak Oleg Pronin
author_facet	Marcus Seidel Jonathan Brons Gunnar Arisholm Kilian Fritsch Vladimir Pervak Oleg Pronin
author_sort	Marcus Seidel
title	Efficient High-Power Ultrashort Pulse Compression in Self-Defocusing Bulk Media
title_short	Efficient High-Power Ultrashort Pulse Compression in Self-Defocusing Bulk Media
title_full	Efficient High-Power Ultrashort Pulse Compression in Self-Defocusing Bulk Media
title_fullStr	Efficient High-Power Ultrashort Pulse Compression in Self-Defocusing Bulk Media
title_full_unstemmed	Efficient High-Power Ultrashort Pulse Compression in Self-Defocusing Bulk Media
title_sort	efficient high-power ultrashort pulse compression in self-defocusing bulk media
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/30398986dbfa4ea38e259979857d3826
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Efficient High-Power Ultrashort Pulse Compression in Self-Defocusing Bulk Media

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