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Attosecond Synchronization of High-Harmonic Soft X-rays.

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Title: Attosecond Synchronization of High-Harmonic Soft X-rays.
Authors: Mairesse, Y., de Bohan, A., Frasinski, L. J., Merdji, H., Dinu, L. C., Monchicourt, P., Breger, P., Kovačev, M., Taïeb, R., Carré, B., Muller, H. G., Agostini, P., Salières, P.
Source: Science (pre-March 2025). 11/28/2003, Vol. 302 Issue 5650, p1540-1543. 4p. 1 Diagram, 3 Graphs.
Subjects: Ultrashort laser pulses, Electrical harmonics, Electric waves, Synchronization
Abstract: Subfemtosecond light pulses can be obtained by superposing several high harmonics of an intense laser pulse. Provided that the harmonics are emitted simultaneously, increasing their number should result in shorter pulses. However, we found that the high harmonics were not synchronized on an attosecond time scale, thus setting a lower limit to the achievable x-ray pulse duration. We showed that the synchronization could be improved considerably by controlling the underlying ultrafast electron dynamics, to provide pulses of 130 attoseconds in duration. We discuss the possibility of achieving even shorter pulses, which would allow us to track fast electron processes in matter. [ABSTRACT FROM AUTHOR]
Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: Attosecond Synchronization of High-Harmonic Soft X-rays.
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  Data: <searchLink fieldCode="AR" term="%22Mairesse%2C+Y%2E%22">Mairesse, Y.</searchLink><br /><searchLink fieldCode="AR" term="%22de+Bohan%2C+A%2E%22">de Bohan, A.</searchLink><br /><searchLink fieldCode="AR" term="%22Frasinski%2C+L%2E+J%2E%22">Frasinski, L. J.</searchLink><br /><searchLink fieldCode="AR" term="%22Merdji%2C+H%2E%22">Merdji, H.</searchLink><br /><searchLink fieldCode="AR" term="%22Dinu%2C+L%2E+C%2E%22">Dinu, L. C.</searchLink><br /><searchLink fieldCode="AR" term="%22Monchicourt%2C+P%2E%22">Monchicourt, P.</searchLink><br /><searchLink fieldCode="AR" term="%22Breger%2C+P%2E%22">Breger, P.</searchLink><br /><searchLink fieldCode="AR" term="%22Kovačev%2C+M%2E%22">Kovačev, M.</searchLink><br /><searchLink fieldCode="AR" term="%22Taïeb%2C+R%2E%22">Taïeb, R.</searchLink><br /><searchLink fieldCode="AR" term="%22Carré%2C+B%2E%22">Carré, B.</searchLink><br /><searchLink fieldCode="AR" term="%22Muller%2C+H%2E+G%2E%22">Muller, H. G.</searchLink><br /><searchLink fieldCode="AR" term="%22Agostini%2C+P%2E%22">Agostini, P.</searchLink><br /><searchLink fieldCode="AR" term="%22Salières%2C+P%2E%22">Salières, P.</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Science+%28pre-March+2025%29%22">Science (pre-March 2025)</searchLink>. 11/28/2003, Vol. 302 Issue 5650, p1540-1543. 4p. 1 Diagram, 3 Graphs.
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  Data: <searchLink fieldCode="DE" term="%22Ultrashort+laser+pulses%22">Ultrashort laser pulses</searchLink><br /><searchLink fieldCode="DE" term="%22Electrical+harmonics%22">Electrical harmonics</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+waves%22">Electric waves</searchLink><br /><searchLink fieldCode="DE" term="%22Synchronization%22">Synchronization</searchLink>
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  Label: Abstract
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  Data: Subfemtosecond light pulses can be obtained by superposing several high harmonics of an intense laser pulse. Provided that the harmonics are emitted simultaneously, increasing their number should result in shorter pulses. However, we found that the high harmonics were not synchronized on an attosecond time scale, thus setting a lower limit to the achievable x-ray pulse duration. We showed that the synchronization could be improved considerably by controlling the underlying ultrafast electron dynamics, to provide pulses of 130 attoseconds in duration. We discuss the possibility of achieving even shorter pulses, which would allow us to track fast electron processes in matter. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=pbh&AN=11702505
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              Text: 11/28/2003
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