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Analytical formulation for modulation of time-resolved dynamical Franz-Keldysh effect by the electron excitation in dielectrics
https://repo.qst.go.jp/records/48499
https://repo.qst.go.jp/records/484999829dc16-ad04-4c48-a671-86a82eea4951
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2018-02-14 | |||||
| タイトル | ||||||
| タイトル | Analytical formulation for modulation of time-resolved dynamical Franz-Keldysh effect by the electron excitation in dielectrics | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
乙部, 智仁
× 乙部, 智仁× 乙部 智仁 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Analytical formulation of sub-cycle modulation (SCM) of dielectrics including electron excitation is presented. The SCM is sensitive to not only the time-resolved dynamical Franz-Keldysh effect (Tr-DFKE) [T. Otobe, et al., Phys. Rev. B93, 045124 (2016)], which is the nonlinear response without the electron excitation, but also the excited electrons. The excited electrons enhance the modulation with even-harmonics of pump laser frequency, and generate the odd-harmonics components. The new aspect of SCM is a consequence of i) the interference between the electrons excited by the pump laser and those excited by the probe pulse laser and ii) oscillation of the generated wave packed by the pump laser. When the probe- and pump-pulse polarizations are parallel, the enhancement of the even harmonics and the generation of the odd harmonics modulation appear. However, if the polarizations are orthogonal, the effect arising from the electron excitations becomes weak. By comparing the parabolic and cosine band models, I found that the electrons under the intense laser field move as quasi-free particles. |
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| 書誌情報 |
Physical Review B 巻 96, 号 23, p. 235115-1-235115-10, 発行日 2017-12 |
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| 出版者 | ||||||
| 出版者 | アメリカ物理学会 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1103/PhysRevB.96.235115 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://journals.aps.org/prb/abstract/10.1103/PhysRevB.96.235115 | |||||
| 関連名称 | https://journals.aps.org/prb/abstract/10.1103/PhysRevB.96.235115 | |||||
