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Generalized framework for the step response of semiconducting materials to optically switched electrical bias input in terahertz emission spectroscopy
http://hdl.handle.net/10649/0002000286
http://hdl.handle.net/10649/0002000286d31b4ace-f3ad-4857-a025-3f5f162d68d4
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
AcceptedManuscript(JOSAB2023).pdf (605 KB)
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| アイテムタイプ | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2026-08-07 | |||||
| タイトル | ||||||
| タイトル | Generalized framework for the step response of semiconducting materials to optically switched electrical bias input in terahertz emission spectroscopy | |||||
| 言語 | en | |||||
| 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 | open access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
| 著者 |
Takeya Unuma
× Takeya Unuma |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | In this paper, a generalized framework for the step response of semiconducting materials to optically switched electrical bias input in terahertz emission spectroscopy was developed, introducing a complex response function into the frequency domain. A comprehensive formula was obtained for calculating the transient current from the poles of the response function under bias field. This formula was found to give transient currents of an exponentially saturated, overshooting, or oscillating nature for three different regimes of charge transport in an isolated energy band. Furthermore, it was clarified how the transient terahertz emission is linked to the response function and its retarded contribution. When either true current or polarization current is linear with respect to bias field and dominates the transient current, the retarded contribution is identified as the small-signal ac complex conductivity. Two different spectral examples of the retarded contribution were given for actual terahertz Bloch oscillations in biased semiconductor superlattices, describing the small-signal response of polarization current under the Wannier–Stark localization and the large-signal response of true current under interminiband mixing. | |||||
| 言語 | en | |||||
| 書誌情報 |
en : Journal of the Optical Society of America B 巻 40, 号 7, p. 1703-1710, 発行日 2023 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0740-3224 | |||||
| ISBN | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1364/JOSAB.488908 | |||||
| 著者版フラグ | ||||||
| 出版タイプ | AM | |||||
| 出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
| 査読の有無 | Peer reviewed | |||||
| 出版者 | ||||||
| 出版者 | Optica Publishing Group | |||||
| 言語 | en | |||||
