Contribution of the collective electron dynamics to the polarization response of an atom subjected to intense IR and weak XUV pulses
We analyze the polarization response of a single Ne atom in an intense infrared (IR) laser field and weak extreme ultraviolet (XUV) isolated attosecond pulse (IAP). The analysis is based on the numerical solution of the time-dependent Kohn–Sham equations and the recently developed perturbation theor...
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| Veröffentlicht in: | Optics letters 2022-07, Vol.47 (13), p.3147-3150 |
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| container_title | Optics letters |
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| creator | Romanov, A. A. Silaev, A. A. Vvedenskii, N. V. Flegel, A. V. Frolov, M. V. |
| description | We analyze the polarization response of a single Ne atom in an intense infrared (IR) laser field and weak extreme ultraviolet (XUV) isolated attosecond pulse (IAP). The analysis is based on the numerical solution of the time-dependent Kohn–Sham equations and the recently developed perturbation theory in the XUV field for an atom subjected to an intense IR field. In our numerical results, we observe a significant increase in the magnitude of the atomic polarization response at the frequencies near the carrier frequency of the IAP and associate it with XUV-induced collective dynamics contributing to the polarizability of Ne. The specific interference between IR- and XUV-induced channels is discussed, and its utilization for retrieving the phase of the generated harmonics in the IR field is suggested. |
| doi_str_mv | 10.1364/OL.460076 |
| format | Article |
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A. ; Silaev, A. A. ; Vvedenskii, N. V. ; Flegel, A. V. ; Frolov, M. V.</creator><creatorcontrib>Romanov, A. A. ; Silaev, A. A. ; Vvedenskii, N. V. ; Flegel, A. V. ; Frolov, M. V.</creatorcontrib><description>We analyze the polarization response of a single Ne atom in an intense infrared (IR) laser field and weak extreme ultraviolet (XUV) isolated attosecond pulse (IAP). The analysis is based on the numerical solution of the time-dependent Kohn–Sham equations and the recently developed perturbation theory in the XUV field for an atom subjected to an intense IR field. In our numerical results, we observe a significant increase in the magnitude of the atomic polarization response at the frequencies near the carrier frequency of the IAP and associate it with XUV-induced collective dynamics contributing to the polarizability of Ne. The specific interference between IR- and XUV-induced channels is discussed, and its utilization for retrieving the phase of the generated harmonics in the IR field is suggested.</description><identifier>ISSN: 0146-9592</identifier><identifier>EISSN: 1539-4794</identifier><identifier>DOI: 10.1364/OL.460076</identifier><language>eng</language><publisher>Washington: Optical Society of America</publisher><subject>Attosecond pulses ; Carrier frequencies ; Infrared lasers ; Perturbation theory ; Polarization</subject><ispartof>Optics letters, 2022-07, Vol.47 (13), p.3147-3150</ispartof><rights>Copyright Optical Society of America Jul 1, 2022</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c290t-3fdb0563db431800749cadc3d8fe91326c696e27873947b7c25e07c512a341053</citedby><cites>FETCH-LOGICAL-c290t-3fdb0563db431800749cadc3d8fe91326c696e27873947b7c25e07c512a341053</cites><orcidid>0000-0002-2870-3141 ; 0000-0002-4966-9448 ; 0000-0001-9905-0064 ; 0000-0001-6651-4619</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,3245,27901,27902</link.rule.ids></links><search><creatorcontrib>Romanov, A. 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In our numerical results, we observe a significant increase in the magnitude of the atomic polarization response at the frequencies near the carrier frequency of the IAP and associate it with XUV-induced collective dynamics contributing to the polarizability of Ne. The specific interference between IR- and XUV-induced channels is discussed, and its utilization for retrieving the phase of the generated harmonics in the IR field is suggested.</description><subject>Attosecond pulses</subject><subject>Carrier frequencies</subject><subject>Infrared lasers</subject><subject>Perturbation theory</subject><subject>Polarization</subject><issn>0146-9592</issn><issn>1539-4794</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNpdkUtLxDAUhYMoOD4W_oOAG110zKtps5TBx0BhQBxxV9L0Fju2TU1SZVz7w21nXLm6B853DvdyEbqgZE65FDerbC4kIYk8QDMacxWJRIlDNCNUyEjFih2jE-83hBCZcD5DPwvbBVcXQ6hth22FwxtgY5sGTKg_AcMk3GiV2063tfE42B3T20a7-lvvcg58bzsPU4HusA62xX4oNmMWyilRdwEmf_k0-iX-Av2OX9cvuB8aD_4MHVV6FOd_8xSt7--eF49RtnpYLm6zyDBFQsSrsiCx5GUhOE3HI4UyujS8TCtQlDNppJLAkjThSiRFYlgMJDExZZoLSmJ-iq72vb2zHwP4kLe1N9A0ugM7-JzJVBCVqpiN6OU_dGMH143b7ShG0pROhdd7yjjrvYMq713darfNKcmnf-SrLN__g_8Cgi59TQ</recordid><startdate>20220701</startdate><enddate>20220701</enddate><creator>Romanov, A. 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| ispartof | Optics letters, 2022-07, Vol.47 (13), p.3147-3150 |
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| language | eng |
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| source | Optica Publishing Group Journals |
| subjects | Attosecond pulses Carrier frequencies Infrared lasers Perturbation theory Polarization |
| title | Contribution of the collective electron dynamics to the polarization response of an atom subjected to intense IR and weak XUV pulses |
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