A theoretical prediction for generating isolated attosecond pulse in water window utilizing instantaneous frequency change of two-color driving laser pulse
Abstract This work reports on the theoretical generation of isolated soft-X ray 106 attosecond pulse within the water window spectral region, through interacting a chirped two-color femtosecond laser pulse with a hydrogen atom. To construct this pulse, a chirped 3.5 optical cycle (9.33 fs) laser pul...
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Nature Portfolio
2025-02-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-88665-2 |
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| author | Masoumeh Dehghanian Mohammad Sabaeian Siamak Noorizadeh |
| author_facet | Masoumeh Dehghanian Mohammad Sabaeian Siamak Noorizadeh |
| author_sort | Masoumeh Dehghanian |
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| description | Abstract This work reports on the theoretical generation of isolated soft-X ray 106 attosecond pulse within the water window spectral region, through interacting a chirped two-color femtosecond laser pulse with a hydrogen atom. To construct this pulse, a chirped 3.5 optical cycle (9.33 fs) laser pulse with a wavelength of 800 nm and an intensity of $$5\times {10}^{14}\frac{\text{W}}{{\text{cm}}^{2}}$$ is used as the main field. A 37.32 fs laser pulse with a wavelength of 1600 nm and intensity of $$1.25\times {10}^{14}\frac{\text{W}}{{\text{cm}}^{2}}$$ , one-quarter of the main field intensity, is employed as the control field. A tangential hyperbolic function is used to impose chirp on the main field. The study simultaneously utilizes the lowest possible intensity and the highest possible pulse duration for both the main and the control field to reach the water window spectral region in high-order harmonic generation up to the 320th harmonic of the driving field. |
| format | Article |
| id | doaj-art-1e5ffbc7780b4f3baeb5b3708f728d18 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-1e5ffbc7780b4f3baeb5b3708f728d182025-02-02T12:17:02ZengNature PortfolioScientific Reports2045-23222025-02-0115111610.1038/s41598-025-88665-2A theoretical prediction for generating isolated attosecond pulse in water window utilizing instantaneous frequency change of two-color driving laser pulseMasoumeh Dehghanian0Mohammad Sabaeian1Siamak Noorizadeh2Department of Physics, Faculty of Science, Shahid Chamran University of AhvazDepartment of Physics, Faculty of Science, Shahid Chamran University of AhvazDepartment of Chemistry, Faculty of Science, Shahid Chamran University of AhvazAbstract This work reports on the theoretical generation of isolated soft-X ray 106 attosecond pulse within the water window spectral region, through interacting a chirped two-color femtosecond laser pulse with a hydrogen atom. To construct this pulse, a chirped 3.5 optical cycle (9.33 fs) laser pulse with a wavelength of 800 nm and an intensity of $$5\times {10}^{14}\frac{\text{W}}{{\text{cm}}^{2}}$$ is used as the main field. A 37.32 fs laser pulse with a wavelength of 1600 nm and intensity of $$1.25\times {10}^{14}\frac{\text{W}}{{\text{cm}}^{2}}$$ , one-quarter of the main field intensity, is employed as the control field. A tangential hyperbolic function is used to impose chirp on the main field. The study simultaneously utilizes the lowest possible intensity and the highest possible pulse duration for both the main and the control field to reach the water window spectral region in high-order harmonic generation up to the 320th harmonic of the driving field.https://doi.org/10.1038/s41598-025-88665-2High-order harmonic generationIsolated attosecond pulseTwo-color driving laser fieldChirpWater window spectral regionRed-shifting effect |
| spellingShingle | Masoumeh Dehghanian Mohammad Sabaeian Siamak Noorizadeh A theoretical prediction for generating isolated attosecond pulse in water window utilizing instantaneous frequency change of two-color driving laser pulse Scientific Reports High-order harmonic generation Isolated attosecond pulse Two-color driving laser field Chirp Water window spectral region Red-shifting effect |
| title | A theoretical prediction for generating isolated attosecond pulse in water window utilizing instantaneous frequency change of two-color driving laser pulse |
| title_full | A theoretical prediction for generating isolated attosecond pulse in water window utilizing instantaneous frequency change of two-color driving laser pulse |
| title_fullStr | A theoretical prediction for generating isolated attosecond pulse in water window utilizing instantaneous frequency change of two-color driving laser pulse |
| title_full_unstemmed | A theoretical prediction for generating isolated attosecond pulse in water window utilizing instantaneous frequency change of two-color driving laser pulse |
| title_short | A theoretical prediction for generating isolated attosecond pulse in water window utilizing instantaneous frequency change of two-color driving laser pulse |
| title_sort | theoretical prediction for generating isolated attosecond pulse in water window utilizing instantaneous frequency change of two color driving laser pulse |
| topic | High-order harmonic generation Isolated attosecond pulse Two-color driving laser field Chirp Water window spectral region Red-shifting effect |
| url | https://doi.org/10.1038/s41598-025-88665-2 |
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