Non-linear self-driven spectral tuning of Extreme Ultraviolet Femtosecond Pulses in monoatomic materials
Abstract Self-action nonlinearity is a key aspect – either as a foundational element or a detrimental factor – of several optical spectroscopies and photonic devices. Supercontinuum generation, wavelength converters, and chirped pulse amplification are just a few examples. The recent advent of Free...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Publishing Group
2021-04-01
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| Series: | Light: Science & Applications |
| Online Access: | https://doi.org/10.1038/s41377-021-00531-8 |
| _version_ | 1798018350799912960 |
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| author | Carino Ferrante Emiliano Principi Andrea Marini Giovanni Batignani Giuseppe Fumero Alessandra Virga Laura Foglia Riccardo Mincigrucci Alberto Simoncig Carlo Spezzani Claudio Masciovecchio Tullio Scopigno |
| author_facet | Carino Ferrante Emiliano Principi Andrea Marini Giovanni Batignani Giuseppe Fumero Alessandra Virga Laura Foglia Riccardo Mincigrucci Alberto Simoncig Carlo Spezzani Claudio Masciovecchio Tullio Scopigno |
| author_sort | Carino Ferrante |
| collection | DOAJ |
| description | Abstract Self-action nonlinearity is a key aspect – either as a foundational element or a detrimental factor – of several optical spectroscopies and photonic devices. Supercontinuum generation, wavelength converters, and chirped pulse amplification are just a few examples. The recent advent of Free Electron Lasers (FEL) fostered building on nonlinearity to propose new concepts and extend optical wavelengths paradigms for extreme ultraviolet (EUV) and X-ray regimes. No evidence for intrapulse dynamics, however, has been reported at such short wavelengths, where the light-matter interactions are ruled by the sharp absorption edges of core electrons. Here, we provide experimental evidence for self-phase modulation of femtosecond FEL pulses, which we exploit for fine self-driven spectral tunability by interaction with sub-micrometric foils of selected monoatomic materials. Moving the pulse wavelength across the absorption edge, the spectral profile changes from a non-linear spectral blue-shift to a red-shifted broadening. These findings are rationalized accounting for ultrafast ionization and delayed thermal response of highly excited electrons above and below threshold, respectively. |
| first_indexed | 2024-04-11T16:22:34Z |
| format | Article |
| id | doaj.art-c3d16a7161fe400b991dfbda936de0d2 |
| institution | Directory Open Access Journal |
| issn | 2047-7538 |
| language | English |
| last_indexed | 2024-04-11T16:22:34Z |
| publishDate | 2021-04-01 |
| publisher | Nature Publishing Group |
| record_format | Article |
| series | Light: Science & Applications |
| spelling | doaj.art-c3d16a7161fe400b991dfbda936de0d22022-12-22T04:14:17ZengNature Publishing GroupLight: Science & Applications2047-75382021-04-011011710.1038/s41377-021-00531-8Non-linear self-driven spectral tuning of Extreme Ultraviolet Femtosecond Pulses in monoatomic materialsCarino Ferrante0Emiliano Principi1Andrea Marini2Giovanni Batignani3Giuseppe Fumero4Alessandra Virga5Laura Foglia6Riccardo Mincigrucci7Alberto Simoncig8Carlo Spezzani9Claudio Masciovecchio10Tullio Scopigno11Graphene Labs, Istituto Italiano di TecnologiaElettra-Sincrotrone Trieste S.C.p.A.Dipartimento di Scienze Fisiche e Chimiche, Università degli Studi dell’AquilaDipartimento di Fisica, Università di Roma “La Sapienza”Dipartimento di Fisica, Università di Roma “La Sapienza”Center for Life Nano Science @Sapienza, Istituto Italiano di TecnologiaElettra-Sincrotrone Trieste S.C.p.A.Elettra-Sincrotrone Trieste S.C.p.A.Elettra-Sincrotrone Trieste S.C.p.A.Elettra-Sincrotrone Trieste S.C.p.A.Elettra-Sincrotrone Trieste S.C.p.A.Graphene Labs, Istituto Italiano di TecnologiaAbstract Self-action nonlinearity is a key aspect – either as a foundational element or a detrimental factor – of several optical spectroscopies and photonic devices. Supercontinuum generation, wavelength converters, and chirped pulse amplification are just a few examples. The recent advent of Free Electron Lasers (FEL) fostered building on nonlinearity to propose new concepts and extend optical wavelengths paradigms for extreme ultraviolet (EUV) and X-ray regimes. No evidence for intrapulse dynamics, however, has been reported at such short wavelengths, where the light-matter interactions are ruled by the sharp absorption edges of core electrons. Here, we provide experimental evidence for self-phase modulation of femtosecond FEL pulses, which we exploit for fine self-driven spectral tunability by interaction with sub-micrometric foils of selected monoatomic materials. Moving the pulse wavelength across the absorption edge, the spectral profile changes from a non-linear spectral blue-shift to a red-shifted broadening. These findings are rationalized accounting for ultrafast ionization and delayed thermal response of highly excited electrons above and below threshold, respectively.https://doi.org/10.1038/s41377-021-00531-8 |
| spellingShingle | Carino Ferrante Emiliano Principi Andrea Marini Giovanni Batignani Giuseppe Fumero Alessandra Virga Laura Foglia Riccardo Mincigrucci Alberto Simoncig Carlo Spezzani Claudio Masciovecchio Tullio Scopigno Non-linear self-driven spectral tuning of Extreme Ultraviolet Femtosecond Pulses in monoatomic materials Light: Science & Applications |
| title | Non-linear self-driven spectral tuning of Extreme Ultraviolet Femtosecond Pulses in monoatomic materials |
| title_full | Non-linear self-driven spectral tuning of Extreme Ultraviolet Femtosecond Pulses in monoatomic materials |
| title_fullStr | Non-linear self-driven spectral tuning of Extreme Ultraviolet Femtosecond Pulses in monoatomic materials |
| title_full_unstemmed | Non-linear self-driven spectral tuning of Extreme Ultraviolet Femtosecond Pulses in monoatomic materials |
| title_short | Non-linear self-driven spectral tuning of Extreme Ultraviolet Femtosecond Pulses in monoatomic materials |
| title_sort | non linear self driven spectral tuning of extreme ultraviolet femtosecond pulses in monoatomic materials |
| url | https://doi.org/10.1038/s41377-021-00531-8 |
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