Electron with orbital angular momentum in a strong laser wave; Physical Review A; Vol. 86, iss. 6
| Parent link: | Physical Review A: journal.— , 1970- Vol. 86, iss. 6.— 2012.— P. 062102 (1-13) |
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| Autor Principal: | |
| Summary: | Electrons carrying orbital angular momentum (OAM) have recently been discovered theoretically and obtained experimentally, which opens up possibilities for using them in high-energy physics. We consider such a twisted electron moving in the external field of a plane electromagnetic wave and study how this field influences the electron's OAM. Being motivated by the development of high-power lasers, we focus our attention on a classically strong-field regime for which −e2A2̅ /(me2c4)≥1. It is shown that, along with the well-known "plane-wave" Volkov solution, the Dirac equation also has the "non-plane-wave" solutions, which possess OAM and spin-orbit coupling and generalize the free-electron's Bessel states. Motion of an electron with OAM in a circularly polarized laser wave reveals a twofold character: the wave-packet center moves along a classical helical trajectory with some quantum transverse broadening (due to OAM) existing even for a free electron. Using the twisted states, we calculate the electron's total angular momentum and predict its shift in the strong-field regime, which is analogous to the well-known shifts of the electron's momentum and mass (and to a less-known shift of its spin) in intense fields. Since the electron's effective angular momentum is conserved in a plane wave, as well as in some more general field configurations, we discuss several possibilities for accelerating nonrelativistic twisted electrons by using focused and combined electromagnetic fields. В фонде НТБ ТПУ отсутствует |
| Idioma: | inglés |
| Publicado: |
2012
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| Subjects: | |
| Formato: | Capítulo de libro |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=599541 |
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| 200 | 1 | |a Electron with orbital angular momentum in a strong laser wave |f D. V. Karlovets | |
| 320 | |a References: 49 tit | ||
| 330 | |a Electrons carrying orbital angular momentum (OAM) have recently been discovered theoretically and obtained experimentally, which opens up possibilities for using them in high-energy physics. We consider such a twisted electron moving in the external field of a plane electromagnetic wave and study how this field influences the electron's OAM. Being motivated by the development of high-power lasers, we focus our attention on a classically strong-field regime for which −e2A2̅ /(me2c4)≥1. It is shown that, along with the well-known "plane-wave" Volkov solution, the Dirac equation also has the "non-plane-wave" solutions, which possess OAM and spin-orbit coupling and generalize the free-electron's Bessel states. Motion of an electron with OAM in a circularly polarized laser wave reveals a twofold character: the wave-packet center moves along a classical helical trajectory with some quantum transverse broadening (due to OAM) existing even for a free electron. Using the twisted states, we calculate the electron's total angular momentum and predict its shift in the strong-field regime, which is analogous to the well-known shifts of the electron's momentum and mass (and to a less-known shift of its spin) in intense fields. Since the electron's effective angular momentum is conserved in a plane wave, as well as in some more general field configurations, we discuss several possibilities for accelerating nonrelativistic twisted electrons by using focused and combined electromagnetic fields. | ||
| 333 | |a В фонде НТБ ТПУ отсутствует | ||
| 461 | |t Physical Review A |o journal |d 1970- | ||
| 463 | |t Vol. 86, iss. 6 |v P. 062102 (1-13) |d 2012 | ||
| 610 | 1 | |a труды учёных ТПУ | |
| 700 | 1 | |a Karlovets |b D. V. |c Physicist |c Researcher of Tomsk Polytechnic University, Candidate of physical and mathematical science |f 1983- |g Dmitry Valeryevich |3 (RuTPU)RU\TPU\pers\30860 | |
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